农业工程

Wang Yanhong

2015, 5(3)

Abstract(869) [PDF 627KB](4)

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2015, 5(3)

Abstract(728) [PDF 2049KB](3)

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Xiao Lin

2015, 5(3)

Abstract(576) [PDF 642KB](3)

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Chang Rui

2015, 5(3)

Abstract(2160) [PDF 955KB](4)

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Performance Comparison of Two Types Dibble Planting Devices

Cui Junwei, Zhao Liang, Yan Hua, Gao Xiwen, Xu Pan, Wang Haifeng

2015, 5(3): 1-4.

Abstract(714) [PDF 1128KB](581)

Abstract:
Structure features，moving track，dynamic characteristics，accuracy of catching seedlings and the highest working efficiency of two types dibble planting devices were analyzed and compared.Single dibble planting device could obtain ideal trajectories and higher accuracy of catching seedlings through reasonable design on parameters of crank connecting rod.It could reduce soil interference during planting and its weight was small.But it was not suitable for high speed operation because of large movement impact during working.Trajectories of dibble for multiple dibbles planting device was trochoid motion following drive device.This dibble planting device could work in high frequency and fit different spacing in large scope.Its movement impact was small.But the size of its dibbles is smaller and its weight was large.

Development and Prospect of Automatic Transplanting Machine Disk Conveying Device System for Plug Seedling

Xu Yujuan, Wu Mingliang, Xiang Wei

2015, 5(3): 5-8.

Abstract(802) [PDF 1123KB](692)

Abstract:
Disk conveying device is an important part of automatic transplanter.Accurate position of disk conveying is the guarantee of machine precision work.Research on disk conveying device is conducive to better overall performance improvements transplanter.Main types，working principle and main existing problems of disk conveying device were introduced.Development trend of disk conveying device was discussed.It provided reference for future research and development of disk conveying device.

Comparison of Corn Stalk Cutting Device

Cui Meng, Zhang Daolin, Bu Lingxin, Jia Chunyang, Wang Lixing

2015, 5(3): 9-12.

Abstract(724) [PDF 1112KB](593)

Abstract:
Cutting-feeding integration technology of corn stalk was researched.Advantages and disadvantages of 3 kinds of corn stalk cutting device such as reciprocating knife type，flail knife type and disc knife type were analyzed.First cutting and after feeding technology of stalk in the process of corn harvest was put forward.Corn harvester with disc cutter stalk cutting device should be developed and extended intensively.

Development Situation of Sweet Potato Harvester at Home and Abroad

Zhang Zirui, Liu Guiming, Li Yuhong

2015, 5(3): 13-15.

Abstract(745) [PDF 3028KB](260)

Abstract:
Research and development situation of sweet potato harvester at home and abroad were introduced.Some representative models were listed，and their characteristics were summarized.It provided reference for domestic enterprise to develop sweet potato harvester series products in the future.

Application Status and Prospects of Cotton Harvester in China

Zhou Haiyan, Sun Yufeng, Yang Bingnan, Zhao Fei, Hao Fuping, Man Xiaoyong

2015, 5(3): 16-18.

Abstract(760) [PDF 429KB](613)

Abstract:
Importance of cotton harvester was introduced.Present development situation of cotton harvester industry at domestic and foreign was analyzed emphatically.Domestic gap and problems were pointed out.Development direction of domestic cotton harvester was put forward.Suggestions about optimizing the key parts and components manufacturing technology，machine and equipment quality inspection，etc.were gived.It should self-develop cotton harvester key core components such as picking cotton finger and series products that were suitable for our country，met the demand of Xinjiang construction corps，inland cotton region in Xinjiang，huanghuaihai cotton production areas，the Yangtze river cotton production areas.It would realize cotton harvester large-scale standardized production，gradually replace imported machine.

Automatic Monitoring Alarm Device of Planter Miss-seeding and Planting Trail

Li Leixia, Li Jiandong, Yang Wei, Jia Jingxia

2015, 5(3): 19-20.

Abstract(768) [PDF 476KB](647)

Abstract:
A kind of automatic monitoring alarm device of planter miss-seeding and planting trail was introduced.It mainly included control system，signal receiving system，signal conversion system and signal amplification system.This device had advantages of simple operation，flexible and convenient，reliable working.And it could be widely used for sowing machine.

Preparation Machinery of High Quality Forage

Wang Qiang, Zhao Xiaojuan, He Gang, Zhai Gaixia, Hao Xingyu

2015, 5(3): 21-23.

Abstract(735) [PDF 1645KB](651)

Abstract:
In recent years，forage harvester has made great breakthrough in China.It basically formed series，and also developed gradually to large-scale and intelligent.Pattern of forage harvesting mechanization has been basically established.The problem to be solved was to improve quality of forage.All kinds of involved machinery in the process of high quality forage grass preparation were summarized according to forage harvesting technology.It pointed out that in order to produce high quality forage，there must be a reasonable harvest process to match harvesting and processing machinery.

Application of 4LZJ-3 Type Wheat and Straw Combined Harvester in Kezhou Area of Xinjiang

Tuersun Guli·Keyimu

2015, 5(3): 24-25.

Abstract(592) [PDF 583KB](599)

Abstract:
Structure features，extension and application of 4LZJ-3 type wheat and straw harvester were introduced.Its economic benefits were analyzed.And existing problems were pointed out.Improvement suggestions were put forward.

Current Situation，Problems and Countermeasures about Animal Husbandry Mechanization in Wenling City

Wang Gaoqian

2015, 5(3): 26-29.

Abstract(690) [PDF 592KB](626)

Abstract:
Current situation of animal husbandry and animal husbandry mechanization in Wenling city of Zhejiang province were summarized. Problems of animal husbandry mechanization were analyzed. And on this basis，measures and advice were put forward in order to promote animal husbandry mechanization development of Wenling city.

High Yield Technology of Mechanical Precision Bunch Planting for Single Cropping Late Rice in Jiaxing City

Wu Yongsheng, Dai Wenhua, Gao Jianxiong

2015, 5(3): 30-32.

Abstract(695) [PDF 573KB](699)

Abstract:
A high yield technology of mechanical precision bunch planting for single cropping late rice was introduced.Development process，advantages compared with mechanical transplanting technology and manual direct seeding technology，and key production technology of this technology were expounded in order to provide reference for Jiaxing and surrounding areas to carry out mechanical direct seeding for rice.

Rice Standardized Seedling and Mechanical Transplanting Technology

Li Yi’nan

2015, 5(3): 33-34.

Abstract(754) [PDF 350KB](589)

Abstract:
Rice standardized seedling and principle of mechanical transplanting technology were introduced.Methods and measures of seedling and transplanting techniques were expounded detailedly.Practical significance of standardized seedling and mechanical transplanting technology was put forward.

After Treatment Technology of Diesel Emission and Its Application on Tractor

Liu Jun, Wang Banglong, Yang Zhibo

2015, 5(3): 35-37.

Abstract(767) [PDF 807KB](794)

Abstract:
After treatment technology of diesel emission for non road machinery and its application on tractor were introduced.Two kinds of technology were analyzed contrastively.It provided reference for low emission diesel engine development or application on tractor in China.

Thinking of Agricultural Machinery Scrap and Update Work

Ning Meiping

2015, 5(3): 38-40.

Abstract(676) [PDF 494KB](605)

Abstract:
Basic situation of agricultural machinery scrap and update work in Shanxi province wsa summarized.Reasons for slow progress of scrap and update were analyzed.And improving measures and solutions were put forward.

Support of Vehicle Electrical System Characteristics for Electrical Fault Diagnosis

Jiang Xuefeng

2015, 5(3): 41-43.

Abstract(763) [PDF 477KB](589)

Abstract:
Seven characteristics，such as vehicle electrical system low voltage，DC，single wire system，parallel connection，cathode board iron，equipped with safety device and automotive line color and number，were introduced.Thought and methods for modern automobile electrical fault diagnosis used those characteristics were analyzed.

Electrical Wiring Maintenance Methods of General Machine Tools

Liu Chun

2015, 5(3): 44-47.

Abstract(742) [PDF 599KB](600)

Abstract:
In the process of machine operation，due to influence of various factors，electrical equipment sometimes cannot work normally，which requires electrical equipment repair personnel can accurately grasp troubleshooting of electrical lines.Fault reasons of electric line for machine were analyzed.Steps and methods of maintenance for electrical circuit fault were briefly introduced.Different advantages with various methods were stressed.It is conducive to equipment repair personnel to adopt suitable and effective method of fault repair according to different fault phenomena，in order to solve practical problems quickly and accurately.

Energy-saving Capacity of Seawater Desalination via Large Depth Underground Energy Storage

Song Chenlu, Li Xiuchen, Jiang Yujing

2015, 5(3): 48-52.

Abstract(1179) [PDF 683KB](676)

Abstract:
As an incremental technology of fresh water resources，seawater desalination has become an important avenue dealing with the global water crisis.In recent years，seawater desalination by thermal method and membrane technology has employed world widely.However，the traditional methods of seawater desalination are still energy consumption and costly in operation.More attention has been paid to development and application of energy-saving and efficient seawater desalination technology.Development of compressed air energy storage technology（CAES），reverse osmosis seawater desalination technology in large depth（ROID），and integrated CAES and ROID seawater desalination technology were described.The design scheme of a large depth integrated CAES and ROID seawater desalination system was put forward.Energy consumption of the integrated CAES and ROID seawater desalination system and a traditional seawater desalination system were calculated，respectively.With same fresh water production，the energy consumption of the integrated CAES and ROID seawater desalination system accounted for only 20% of traditional seawater desalination system.

Industrialized Production of Niandoubao

Wang Lili, Baoyinde Ligeer

2015, 5(3): 53-54.

Abstract(705) [PDF 370KB](632)

Abstract:
Nutritional value, traditional manual method, industrialization production present situation and existing problems were introduced. Market prospect of industrialization production of Niandoubao were discussed.

Effect of Propanediol on Shelf-life Flexibility and Sensory Characteristics of Fresh Dough Products

Tu Binhua, Bai Liufang

2015, 5(3): 55-58.

Abstract(753) [PDF 776KB](641)

Abstract:
Two typical fresh dough products were set as test materials，to explore relationship between shelf-life water contents and amount of propanediol added by imitating logistics and sales environment of products.Single factor test with the concentration of 0，0.15%，0.5%，1%，1.5%，2%，2.5% and 3% was used to determine the changes of flexibility of two products，dumpling wrapper and noodles，by the means of sensory analysis.Results showed that，in the same storage time，the flexibility of products got better with the increasing amount of propanediol，which proved the certain amount of propanediol（≥2%）could improve the flexibility and maintain the stability of dough.For the products storing at the temperature of 4 ℃ and 25 ℃，with the amount increasing，surface water contents increasing，also for the toughness，elasticity and fragrance.As for the cooked dumpling wrapper and noodles，hardness and chewing enhanced with the amount of propanediol.

Methods of Total Sugar Detection in Food

Lin Lei

2015, 5(3): 59-61.

Abstract(701) [PDF 404KB](613)

Abstract:
Methods of total sugar detection in food，such as meat product，pastry & its fillings and succades，were explored.Influence factors were discussed.Methods of total sugar detection were compared with national standards methods for meat product，pastry & its fillings and succades.

Balance Evaluation on Water and Soil Resources about Poverty Alleviation Relocate Pilot Project in Tongwei County of Gansu Province

Liu Wenfeng, Dong Rongwan

2015, 5(3): 62-64.

Abstract(721) [PDF 496KB](650)

Abstract:
According to framework and characteristic of poverty alleviation relocate pilot project of Tongwei county in Gansu province，and from consideration of soil and water conservation，balance of water and soil resources was researched according to migration area and resettlement area.Soil and water conservation measures of every area were put forward.Role of support and protection of water and soil resources for the project was discussed.

Preliminary Exploration of Rural Collective Management Construction Land in Fenggang County of Guizhou Province

Lian Yong

2015, 5(3): 65-67.

Abstract(630) [PDF 441KB](609)

Abstract:
Situation of rural collective management construction land in Fenggang county was investigated.Land use type was initially found out.Difficulties for rural collective management construction land faced in reaching into the market were discussed.Reform measures and proposals to promote rural collective management construction land into the market were put forward.It provided reference for improving and standardizing rural collective management construction land into the market.

Design on Self-propelled Forage Harvest Bundling Machine

Yang Li, Dong Zhongyi, Wang Zhenhua, He Gang

2015, 5(3): 68-71.

Abstract(745) [PDF 668KB](573)

Abstract:
Aiming at the difficulties of forage and straw collection in process of commercialization and resource utilization，and current situation that land decentralized management，cultivated land area was small and not suitable for traction type bundling machine operation，self-propelled forage harvest bundling machine was designed.Overall structure and working principle of this machine were introduced.Function and structure of main working parts such as airframe chassis，walking system，cutting device and compression mechanism etc.were analyzed.Structure and design parameters of main component were determined.

Research and Development of 2BFT-3（4） Type Detecting Soil Moisture Precision Seeder for Corn

Han Guangsen, Zhang Yifeng

2015, 5(3): 72-76.

Abstract(744) [PDF 2721KB](237)

Abstract:
According to the characteristics of Shanxi，Hebei and Mongolia along the Great Wall in dry farming，2BFT-3（4）type detecting soil moisture precision seeder for corn was designed.Overall design，key component design，experiment and improvement were introduced.Successful development of this machine provided mechanical technical support for the development of water-saving agriculture.

Design on Robot Welding Workstation of Chassis Frame for Corn Harvester

Wang Decheng, Gao Lin, Zhang Daqun, Li Dengkun

2015, 5(3): 77-79.

Abstract(707) [PDF 1577KB](688)

Abstract:
Robot welding workstation of chassis frame for corn harvester was designed.Its technical requirements were introduced.Key components such as fixture and positioner were designed.Main function was expounded.Welding rate and economy were analyzed.At the same time，several kinds of parts that welding was not up to were introduced.

Design and Simulation of Trigeminal Conveying Feeding Mechanism

Dai Xiaojun, Yang Li, Dong Zhongyi, Guo Xiyan, Wang Qiang

2015, 5(3): 80-84.

Abstract(760) [PDF 1355KB](604)

Abstract:
According to the problems that conveyor feed was not smooth and blocking when feeding long and tough straw such as corn straw and sorghum straw，short，soft and large wrapping straw such as alfalfa and haulm straw using feeding mechanism of side feeding bundling machine，trigeminal conveying feeding mechanism was designed.Solid modeling，assemble virtually and check interference of fork were achieved by using Solidworks software.And motion simulation and analysis of trigeminal conveying feeding mechanism were completed by using ADAMS virtual simulation technology.Motion loci and speed and acceleration of feeding fork top were obtained to verify the accuracy of the theory of approximate data.Problems of long design cycle and low efficiency existing in traditional design were overcome.It provided theoretical basis and practical methods for design of trigeminal conveying feed mechanism.

Design and Experiment of Uniformity Cutting Device of Carrot Harvester

Yang Wei, Li Jiandong, Yang Hongwei, Li Guoliang, Shang Shuqi, Wang Jiasheng

2015, 5(3): 85-88.

Abstract(713) [PDF 1345KB](740)

Abstract:
Uniformity cutting device is an important component of carrot harvester.Its performance influences the condition of incision position and cutting uniformity directly.According to agronomic requirements and planting patterns of carrots，a double disc uniformity cutting device applied to double-row carrot harvester was designed successfully.This device was mainly composed of uniformity parts，cutting component，horizontal clamping and conveying component and etc.Uniformity，cutting and throwing operation could be completed simultaneously.Double disc cutter as cutting part could insure smooth incision appearance and good cutting effect.Baffle was uniformity component and its height and middle gap size was adjustable.Horizontal clamping conveying unit with upper and lower two layers sandwiched belt，which could effectively prevent carrot seedling leaves falling and be conducive to subsequent cutting and transplanting operation.Successful development of this device solved several problems of carrot mechanical harvest，such as incision was not beautiful，lacy effect was not good and plug seedling.At the same time，this device could effectively improve harvest effect of carrot harvester.

Design of Finger Disc Residual Film Recovery Machine

Zhu Haojie, Yang Wanzhang, Zhou Yansheng, Zhang Jibing, Mu Daohuan

2015, 5(3): 89-92.

Abstract(853) [PDF 917KB](691)

Abstract:
Design of Finger Disc Residual Film Recovery Machine

Design and Kinematic Simulation on Obstacle Removing Mechanism of Wheeled Forest Harvester

Li Dawei, Liu Jinhao, Li Cun, Sun Zhibo

2015, 5(3): 93-96.

Abstract(735) [PDF 1117KB](598)

Abstract:
With the rapid development of technology，forest harvester plays an important role in the field of forestry.But due to the bad working condition of forest environment，essential obstacle removing mechanism can help to improve operation efficiency of forest harvester.A kind of obstacle removing mechanism of wheeled forest harvester suitable for China was designed.Virtual prototype was established in ProE.Kinematics and dynamics simulation of push shovel was made.Motion characteristic curve and force curve of push shovel hydraulic cylinder were obtained.Analysis results showed that maximum axial thrust of push shovel hydraulic cylinder was 51 408 N in the process of operation for obstacle removing mechanism.It met functional requirements of removing obstacles.

Design of 4UL-1 Type Multifunctional Root Crops Digger

Li Jiandong, Yang Wei, Du Yongqi, Jia Jingxia, Li Yang

2015, 5(3): 97-99.

Abstract(646) [PDF 560KB](674)

Abstract:
In order to resolve the problems of domestic small root crops diggers of complex categories and single function，a multifunctional root crops digger which could harvest root crops such as potato，beet，sweet potato and peanut has been designed.This multi-use machine could save cost and its application prospect was broad.

Design on Blanking and Shaping Die of a Part

Qiu Xinwei, Wang Junfa, Li Yaqin, Wei Tianlu, Li Xiaohai

2015, 5(3): 100-102.

Abstract(662) [PDF 527KB](661)

Abstract:
Processing technology of part was determined after analyzing its drawings.Key parts of blanking and shaping die were designed.Overall design scheme of mould was determined，which provided a way to solve similar problems and had certain reference function.

Design on Hydraulic Driving Device of Silage Harvester

He Zhifei, Hua Rongjiang, Zhao Yongliang, Jia Jingxia

2015, 5(3): 103-105.

Abstract(632) [PDF 424KB](607)

Abstract:
A hydraulic driving device of silage harvester was designed.And it mainly included engine，hydraulic system，deceleration mechanism and walking parts.This device could realize stepless speed walking mechanism of forage harvester.Its operation was smooth without manual shift impact.It didn′t need to stop when turning a corner on the edge of field.This device could saving operation time and improve work efficiency.

Construction on Practice Teaching System of Rural Region Development

Fu Zhiqiang, Xiao Zhifang, Xiao Xiao, Xu Huaqin, Gao Zhiqiang

2015, 5(3): 106-108.

Abstract(769) [PDF 473KB](571)

Abstract:
To develop the technology management professional with skilled technology，management capacity，market management，by the continuous line as a standard practice for four years，the teaching practice system was constructed which was composed by professional knowledge，curriculum experiments，social surveys，production practice，teaching practice，research training，comprehensive practice，integrated skills experiment，graduation practice，and graduation thesis.Every practice teaching program and assessment method were improved which could ensure to carry out the students practice skills development.Therefore，agricultural technology professionals could be trained for serving agriculture，countryside and farmer.

Optimization of Curriculum System of Postgraduate Programs in First-degree Subject of Life Sciences

Cheng Linjie, Wang Zhengchao, Huang Luqiang, Fu Yajuan, Huang Jianzhong

2015, 5(3): 109-111.

Abstract(626) [PDF 464KB](584)

Abstract:
Curriculum study is critical characteristic of postgraduate education system in our country，which is the important guarantee for cultivating biological talents with innovation ability and adaptation to social needs.In order to provide basic information for optimization of curriculum system of postgraduate programs in first-degree subject of life sciences，combining with practical situation in authorized location of master’s degree of School of Life Science in Fujian Normal University，currently specific questions in this system were analyzed，and optimization path of curriculum system of postgraduate program in first-degree subject of life sciences were discussed.

Application of Virtual Simulation in Teaching of Agricultural Machinery Course

Li Runsheng, Lin Weiguo, Wang Shucai

2015, 5(3): 112-114.

Abstract(625) [PDF 844KB](570)

Abstract:
Due to limitation of time and dimension， there couldn′t be quantities of machines to operate on in old fashioned process of agricultural machinery teaching.That makes students′ theoretical understanding of frame harder.Virtual simulation technology has living effect and is time-sensitive as well as secure and economical.These factors could enable agricultural colleges′ students to get concentration of agricultural machinery courses.According to this，it is essential for adaptation of mechanical teaching to develop courseware based on virtual simulation technology.Meaning and effects of using virtual simulation technology in teaching process according to theory were analyzed.Application of virtual simulation technology with the case of teaching process of redundant constraint and animation production of bowl making machine were studied.

Searching and Practice on Forming Multiform Teaching Platform for College Student Practice and Innovation Ability

Zong Wangyuan, Zhai Hong, Huang Haidong, Liu Shishun

2015, 5(3): 115-118.

Abstract(626) [PDF 588KB](537)

Abstract:
Innovation ability of college students should be developed through practicing.Laboratory，campus factory，innovation and business center and practice base in enterprise for mechanical major students were built especially in Huazhong Agricultural University，providing platforms for college students to develop their innovation ability.Management system，faculty，training program were developed accordingly for this purpose.For example，practice and innovation education management system and teacher troop were established to lay teachers foundation for the cultivation of college students′ innovative ability.Personnel training scheme was revised to provide guarantee for college students′ innovation ability cultivation.A certain achievements about innovation ability training of college students were gained.

Adjustment and Validation for Genetic Parameters of Yixiang 3728 in CERES-Rice Model

Liu Yang, Shi Jianchu, Jin Xinxin, Ma Wenwen, Tao Yueyue, Zuo Qiang

2015, 5(3): 119-123.

Abstract(742) [PDF 1074KB](615)

Abstract:
According to field experimental data in two years（2012 and 2013）in Fangxian of Hubei province，genetic parameters of Yixiang 3728 in CERES-Rice model were adjusted and validated.Firstly，experimental data in 2013 such as dates of key growth periods，leaf area index，dry weight of aboveground biomass and grain yield，were used to adjust these parameters with GLUE program and trial and error method.When error standard reached（most lower than 10%），adjustment was ceased and corresponding genetic parameters were finally determined for Yixiang 3728.After that，experimental data in 2012 were used to validate these determined genetic parameters.Agreement between simulated to measured data in 2012 indicated that these determined parameters were reliable and could be used to reflect genetic characteristics of Yixiang 3728 in Fangxian.These results obtained in this study laid a substantial foundation for other studies related with CERES-Rice model in Fangxian or some other similar regions，and could be also further referred for localization of CERES-Rice model in other regions.

Application Experiment on High Yield Cultivation Technology of Double Cropping Super Rice in Hengdong County of Hu′nan Province

Tang Jianping, Wang Xiaolin

2015, 5(3): 124-127.

Abstract(647) [PDF 527KB](569)

Abstract:
Test and effect of the project that‘Study and application on high yield cultivation technology of double cropping super rice’from 2012 to 2014 in Hengdong county，Hunan province were summarized.Through 3 years of practice，high yield cultivation model and technology roadmap which fit double cropping super rice of south China rice region were groped.Combination varieties of super rice which had many advantages such as wide adaptability，polyclonal antibody，high yield and good quality was selected.Advanced agricultural technology measures which included reasonable collocation early and late rice varieties，general assembly，soil testing fertilization，subsection fertilization，reasonable irrigation management，comprehensive prevention and control of disease，insect and weed were applied.Rice yield reached 9 000 kghm2 through comprehensive application of these measures.

Cultivation Experiment of Breathable Nail

Zhu Shurui, Chen Qiaobiao

2015, 5(3): 128-130.

Abstract(612) [PDF 2288KB](242)

Abstract:
Sack expanding rate，survival rate of vaccination，pollution rate，mycelial growth rate，puncture，incidence rate of pests and diseases，disease and insect infection status，and quality traits of mushroom products were analyzed contrastively in cultivation experiment of breathable nail.Results showed that breathable nail could solve the problem of aerobic edible fungi stick increasing oxygen actively.It truly realized sterilization for zero expansion of bag，reduced infection rate and reduced labor costs.It could improve quality traits of aerobic type edible fungus production.

Effects of Urea Types on Quality Traits of Summer Maize in Different Soil Water Conditions

Huang Yan, Wang Can, Wang Feng, Shao Minmin, Wang Wenting, Gao Yuanyuan, Shao Guoqing

2015, 5(3): 131-134.

Abstract(633) [PDF 488KB](615)

Abstract:
To evaluate the effects of water and nitrogen and their interactions on quality traits in grains of summer maize，pool cultivation experiments was carried out in anti canopy of test station for Agricultural Bureau of Weishan County in Shandong province in 2 growth seasons between 2012 and 2013,and cultivar Zhengdan 958 was the tested materials.Effects between normal urea（NU）and coated compound fertilizer（CCF）on quality traits of summer maize in different soil water conditions were researched.Test results showed that at the same soil water condition，protein yield and content of protein，content of crud fat and starch of CCF treatments were significantly higher than those of NU treatment and control.In the same nitrogen fertilizer treatment，protein yield，content of crud fat and starch of soil moisture at 75% of field capacity were higher than those of soil moisture at 50% of field capacity，and protein content was reduced，but protein content of CCF treatments was significantly higher than that of NU treatments.In conclusion，whatever under dry or wet soil，the positive coupling effect of CCF on content of protein，crud fat and starch was higher than that of NU，which could improve grain quality of summer maize very significantly.

Application of Plant Acoustic Wave Fuelling Technology in Agriculture

Yang Xiangfei, Ma Jungui

2015, 5(3): 135-137.

Abstract(591) [PDF 698KB](672)

Abstract:
Action mechanism of plant acoustic wave fuelling technology was introduced.Features and functions of commonly used acoustic fuelling instrument were expounded.Application and effect of acoustic fuelling instrument in agriculture were analyzed.Practice proved that sound waves had a certain effect on growth and disease prevention of crops.

Comprehensive Prevention and Control Technology of Pear Tree Pests and Disease

Shang Ziming

2015, 5(3): 138-139.

Abstract(660) [PDF 299KB](594)

Abstract:
Pear tree is a kind of common fruit tree in most regions of China.Vulnerable to pests and threats in the growth process of pear tree and it lead to yield and quality decline.Control principle of pear tree pests and disease and prevention and treatment of different periods were introduced.Comprehensive prevention and control technology such as strengthening orchard management，physical control technology and agricultural control technology were expounded.

Comprehensive Evaluation and Suggestions of Beef Security Supply Model in Jilin Province

Chen Ai, Tian Lu

2015, 5(3): 140-144.

Abstract(591) [PDF 688KB](546)

Abstract:
Present status of beef cattle industry and main beef supply mode in Jilin province were expounded.Beef security supply model in Jilin province was comprehensively evaluated based on Entropy TOPSIS method.A relatively safe beef supply model was drawn as a reference for industry development direction.And according to rising demand for quality and safety beef and research conclusion，relevant countermeasures and suggestions were put forward.

Scale Economic Benefit Mechanism of Agricultural Machinery Professional Cooperatives

Wang Hongling, Bai Zhenzhong, Wu Zhaoxiong

2015, 5(3): 145-147.

Abstract(516) [PDF 538KB](532)

Abstract:
Rapid development of agricultural cooperatives not only increased the farmers′ income，but also solved problem of‘who till land in the future’.Good economic and social benefits were achieved.Source of scale economic benefit for agricultural cooperatives were improving land use rate，reducing production cost，rational allocation of resources，promotion of new technologies，seizing operation market，saving operating costs，and extending industrial chain.But problems such as high labor costs，high financing costs，risk of production，management and default，poor infrastructure，difficulty of land circulation and low membership quality were still existed in the operation of reality.Finally countermeasures and suggestions to promote development of agricultural machinery professional cooperatives were put forward from ease funding gap，build a stable development environment and strengthen its own construction.

Economic Benefit Analysis of Shrubs Stubble Machine

Hao Xingyu, Dong Jiajia, Wang Qiang, Li Wei, Gao Lei, Zhang Ning

2015, 5(3): 148-149.

Abstract(624) [PDF 444KB](572)

Abstract:
In view of low desert shrub harvesting efficiency and labor-intensive problems in our country，structural features and operational principle of shrubs stubble machine，and its economic and social benefits were analyzed.Static payback time of shrubs stubble machine is 130 days，investment rate is 88.3%.Static payback time of knapsack bush cutter is 13 days，investment rate is 36.4%.Compared with the knapsack bush cutter，shrubs stubble machine has higher return rate on investment.Shrubs stubble machine could not only bring great economic benefits，but also have some social benefits，and has good market prospects.

Running Mode of Family Farms for Citrus Planting Take Taizhou City，Zhejiang Province for Example

Deng Fei, Gao Zhiqiang

2015, 5(3): 150-152.

Abstract(590) [PDF 449KB](612)

Abstract:
According to citrus status of Taizhou city in Zhejiang province，based on extensive research study of citrus producers and grower of citrus production labor and employment and substance，a comprehensive analysis of cost and benefit for citrus was done.According to family farm design ideas that main labor force was family member，mode and implementation strategies were proposed for planting citrus family farms.

Current Situation，Problems and Countermeasures about Fisheries Technology Extension System in Deqing County of Zhejiang Province

Shen Shuie

2015, 5(3): 153-155.

Abstract(683) [PDF 476KB](553)

Abstract:
In order to accelerating development of fisheries technology extension system in Deqing county of Zhejiang province，development situation of fisheries technology extension system in Deqing county in recent years were analyzed.Then，measures and suggestions were proposed to promote the development of fisheries technology extension system in Deqing county.

Present Situation and Suggestion of Forest Management of Huaxi District in Guiyang City

Cen Zhaohui

2015, 5(3): 156-157.

Abstract(496) [PDF 355KB](660)

Abstract:
According to present situation of forest management of Huaxi district in Guiyang city in recent years，problems existing in the forest management and the reasons were summarized.Suggestions such as strengthening forest protection，establish forestry protection management mechanism，strengthening team construction of forest protection management，and making full use of forest land use planning results，were proposed.

Assessment of Down Draft Gasifier on Prosopis juliflora（Extracts）

Samodini S.Nevase, Chittaranjan N.Gangde, Sandip Gangil, Anil Kumar Dubey

2015, 5(3): 158-160.

Abstract(520) [PDF 902KB](593)

Abstract:
The current investigation followed by biomass based power plant for electricity generation.The Prosopis juliflora was selected as fuel for down draft gasifier.Properties of Prosopis juliflora were determined to check the feasibility of fuel.Characterization of producer gas was done by determining the different constituent，calorific value，density and tar content of producer gas.Performance evaluation of gasifier was carried out by observing the parameters like fuel consumption，specific fuel consumption，equivalence ratio，specific gas production rate，specific gasification rate and gasification efficiency.The volumetric percentage of carbon monoxide（CO），hydrogen（H2），carbon dioxide（CO2），methane（CH4）and nitrogen（N2）at 20 kW was 18.4%，13.8%，11.1%，2.40% and 54.2%，respectively.The calorific value，density and tar of producer gas varied from 4.17 to 4.85 MJm3，1.16 to 1.56 kgm3 and 10.2 to 10.0 mgm3 respectively with the increase of load from 5 to 20 kW.The biomass consumption rate，specific biomass consumption rate，specific gasification rate，specific gas production rate，equivalence ratio and gasification efficiency varied from 11 to 28 kgh，2.20 to 1.40 kg（kW·h），29.63 to 75.43 kg （m2·h），103.7 to 257.43 m3（h·m2），0.32 to 0.47 and 79.26% to 89.90% as the engine load increased from 5 to 20 kW.

GT170 Series Traction Potato Harvester of Grimme Company

Wu Qingfen

2015, 5(3): 161-164.

Abstract(706) [PDF 941KB](577)

Abstract:
Structure features and technical performance of major component of GT170 series traction potato harvester of Grimme company were introduced.It provided reference for China to further research and development of new potato harvester.

2015 Vol. 5, No. 3

Online Office

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