农业工程

Development Status and Suggestion of Plant Protection UAV

YANG Xuejun, YAN Herong, ZHANG Tie, DONG Xiang, SUN Xing

2020, 10(12): 1-6.

Abstract(482) [PDF 9993KB](78)

Abstract:
Due to advantages of high operation efficiency，water and medicine saving，route planning and all terrain operation，plant protection UAV has developed rapidly in domestic market.Development background，reasons for rapid development，formation of new market structure，technical route selection，operation performance and application scope，relevant policies，industry standard and problems to be solved were introduced.Some suggestions for development were put forward.It provided reference for industry standardization and healthy development.

Research Progress on Safety of Multifunctional Orchard Operating Platform

LIU Limin, HE Xiongkui, LIU Yajia

2020, 10(12): 7-13.

Abstract(385) [PDF 15411KB](54)

Abstract:
Multifunctional orchard operating platform is mainly used for picking fresh fruits such as pears and apples that are prone to damage skin due to collisions.It also has functions of carrying platforms such as fruit transportation，branch pruning，and thinning of flowers and fruits.This machine can significantly improve work efficiency of fruit farmers and reduce labor intensity.In recent years，with popularization and application of light and simplified management technology for orchards in our country，multifunctional orchard operation platform equipment has developed rapidly.Because operation on platform belongs to semi-altitude and high-altitude operations，its safety has attracted much attention.Existing research was elaborated in four aspects：pass ability of multifunctional orchard operating platform，lifting mechanism，automatic leveling technology and anti-rollover research.Advantages and disadvantages of crawler and wheeled walking devices and their applications in specific types of orchards at home and abroad were introduced.Application scenarios of cylinder type，scissor type，crank arm type and chain drive lifting mechanism and lifting mechanism most suitable for orchard operations were described.Research progress of automatic leveling technology and leveling accuracy in its application in orchard were reviewed.And brief description of rollover evaluation index and use of the index for rollover warning and active side prevention control methods were also introduced.Finally，it was pointed out that future multifunctional orchard operation platform would develop towards integration of agricultural machinery and agronomy，navigation technology and intelligent manipulator，and multi-technology integration，which would promote safety of multifunctional orchard operation platform.

Development and Experiment of Large Wheat Small Furrows No-tillage Fertilizing Seeder

LI Zenghong

2020, 10(12): 14-17.

Abstract(453) [PDF 5352KB](55)

Abstract:
In order to promote large-scale fully suspended agricultural machinery to play advantages of specialization，intensive and large-scale operation in agricultural production，multi-purpose and low tillage cutter shaft of seeder has been developed.It had innovated new techniques for high yield of wheat with small furrows and opened a new mode of integration technology of agricultural machinery and agronomy，and developing modern agriculture.

Development of Customized Production Machine for Flue-cured Tobacco Formula Nutrient Soil

LI Jianyong, WANG Jianwen, PENG Mengxiang, LI Li, ZHAO Jiongjiong, LIU Liangjiao, ZENG Dewu

2020, 10(12): 18-22.

Abstract(455) [PDF 12202KB](51)

Abstract:
It was confirmed that using nutrient soil including cake fertilizer，mushroom residue，cow dung，calcium magnesium phosphate fertilizer to replace traditional nutrient soil with flue-cured tobacco fire ash soil based on investigations and experiments.Processing machine for flue-cured tobacco nutrient soil was developed by feed grinding，mixing and processing integrated principle.Clog problem of mixing box was solved by improved crushing and stirring method of mixed system.Not only formalization and mechanization of nutritive soil manufacture，but also commercial supply could simplify production process and reduce cost.This new technology characterized by high efficient and low cost could meet demand of green development which has better economic and social benefits.

Development of Management System of Comprehensive Experiment Platform about Agricultural Machinery Equipment

YU Xiaobo, ZHENG Huimei, TAN Zengxin, JIN Xiaoyan, WANG Hengyi

2020, 10(12): 23-27.

Abstract(443) [PDF 4417KB](49)

Abstract:
Based on analysis of existing research of agricultural machinery test platform，a set of management system of agricultural machinery equipment comprehensive experiment platform was developed.Overall design purpose，concept and requirements of management system were mainly described.Design process，functional modules and technical scheme of system were analyzed in detail，which provided references for managers engaged in agricultural machinery test equipment.

Design on Mobile Fertilizer Irrigation Machine

ZHANG Qing, LI Fangliang, KONG Qingbo

2020, 10(12): 28-31.

Abstract(397) [PDF 3578KB](71)

Abstract:
In view of problems that the first pressurization system in water-fertilizer integration technology was usually built in a pump room，which was bulky，high in investment cost and difficult to change movement，a mobile fertilization irrigation that could realize mobile and remote control was designed.The system used a combination of a car and a fertilizing irrigation device to place a water-fertilizer integrated device and a remote controller on a car chassis to realize mobile irrigation and fertilization on a small area of farmland.Remote controller could control switching of gasoline pump and fertilizer tank operation and irrigation area selection function.Experiments showed that the system was small，economical and durable，able to accurately move to desired irrigation area，and to achieve manual or remote control of water and fertilizer irrigation.

Greenhouse Tomato Remote Monitoring System Based on Gizwits Cloud Platform

WU Wen, ZOU Tengyue

2020, 10(12): 32-35.

Abstract(398) [PDF 3570KB](62)

Abstract:
A greenhouse tomato remote monitoring system based on the Gizwits Cloud platform was designed.The upper computer consisted of a mobile phone APP terminal and the Gizwits platform.The lower computer part used STM32F103 single-chip microcomputer as controller to upload environmental parameters obtained by sensor to upper computer，ESP8266Wi-Fi module realized data interaction between upper computer and lower computer.The user could use host computer to remotely monitor and control growth parameters of greenhouse tomato environment.After testing，design data was obtained accurately and the system ran stably to achieve expected functions.

Mechanism and Research Progress of Ozone in Improving Livestock and Poultry Breeding Environment

CHEN Bin, ZHU Jianxi, ZHOU Weidong, CHEN Changqing, YU Guiping

2020, 10(12): 36-40.

Abstract(342) [PDF 5384KB](43)

Abstract:
Disinfection，deodorization and purification are strong guarantees in culture field for its safety production.Ozone has characteristics of strong oxidizing property，low cost and no residue，which can provide better thoughts to improve disinfectant and purification efficiency on livestock and poultry breeding.Application and effects of ozone technology on livestock and poultry breeding were summarized from three aspects including disinfection，deodorization and purification.At last but not least，problems of ozone which would be applied in culture field that need to be solved urgently were discussed as well.

Application of Small Grid Technology of Climate Factors in Tobacco Planting Division in Hunan Province

ZHOU Jian, SUN Xiaocheng, LU Chaojun, JIANG Xiaojun, TENG Linjuan, XIE Yizhi

2020, 10(12): 41-44.

Abstract(403) [PDF 3849KB](60)

Abstract:
Based on 500 m×500 m small grid interpolation，regional distribution characteristics of main climate factors in tobacco growing stage in Hunan were deduced.Based on characteristics of climate conditions and natural disasters during tobacco leaf growth period in Hunan province，and after evaluation of experts in industry，four climate factors，i.e.rainfall during field period，duration of sunshine，rainfall during mature period and maximum temperature≥35 ℃ for 5 days，were proposed to be selected as indicators of tobacco planting area planning.Based on level planning and GIS small grid technology，planting area should be planned reasonably.Planning results showed that cultivated land in most areas of Hunan province was suitable for planting tobacco，and the western part of Hunan province was the most suitable planting area.

Current Status of Research Technology on Rice Storage Quality

HAN Yun, LIANG Jing, LI Cheng, YU Haihua, YU Haiming

2020, 10(12): 45-49.

Abstract(422) [PDF 5491KB](59)

Abstract:
Quality of rice during storage is affected by various internal and external factors.Internal factors include rice varieties and rice moisture content；external factors include temperature，humidity，and storage methods during storage.Studies have shown that，compared with storage conditions of low temperature and low humidity，under high temperature and high humidity storage conditions，fatty acid content and number of molds in rice grow faster，germination rate and moisture content decrease faster，and rate of rice aging and deterioration under high temperature accelerates.Effects of temperature，humidity，and rice moisture content during storage on rice quality were reviewed，and various quality changes of rice under different storage conditions，such as fatty acid content，amylose content，starch gelatinization characteristics，and quality characteristics，were analyzed.Existing rice storage technology was discussed，and differences of rice quality under different storage methods were analyzed.

Relationship Model Optimization Between Storage Capacity and Water Level of Cascade Reservoirs in Middle Reaches of Shule River

ZHENG Zongqian, ZHANG Dinghai, WANG Jinhui, JIA Shenghai, BAI Youshuai, MA Yan, KOU Rui

2020, 10(12): 50-56.

Abstract(443) [PDF 6601KB](52)

Abstract:
In order to study relationship between storage capacity and water level of cascade reservoir，multi-objective decision-making problem that reservoir was originally responsible for a single irrigation or power generation task has now become a multi-purpose reservoir.Three reservoirs（Changma Reservoir，Shuangta Reservoir and Chijinxia Reservoir）in the middle reaches of the Shule River Basin were selected as research objects.Relationship between reservoir water levels and reservoir capacity of three reservoirs was established using Gaussian function and two types of neural networks model.By comparing root mean square error（RMSE），relative root mean square error（RRMSE）and mean absolute percentage error（MAPE）predicted by different models，performance of the model was evaluated.Results showed that three models could better fit relationship between water level and capacity of three reservoirs.For Changma Reservoir and Shuangta Reservoir，performance of radial basis function neural network（RBF）was better than nonlinear regression model and feed forward back propagation neural network（FBNN）model.For Chijinxia Reservoir，performance of FBNN neural network was better than nonlinear regression and RBF neural network models.Compared with classical regression model，artificial neural network had advantages of high precision and scientific reliability in prediction of reservoir capacity.It was more suitable for determination of reservoir capacity.

Design and Application of Falling-Sill and Expanding Stilling Pool Based on BP Neural Network

TANG Zhifei, QIU Yong, YANG Zewen, WANG Wenbing, YANG Kun

2020, 10(12): 57-62.

Abstract(451) [PDF 5009KB](49)

Abstract:
Increasing abruptly expanding width and depth of the sill of bottom-diffusion bottom-flow stilling pool can effectively reduce bottom flow velocity in bottom of stilling pool and improve flow pattern of outflow water，and reduce length of stilling pool to a certain extent.Based on experimental research results，the BP neural network theory was used to establish BP neural network prediction model with sudden expansion width，sill depth and measuring point distance as model input parameters，and bottom flow rate as output parameter.Results showed that average relative error between experimental value and predicted value of predicted bottom velocity model parameters was less than 10%，and determination coefficient R2 reached to 0.9776，which meant that prediction model based on intelligent algorithm could complement a hydraulic model test research well.On this basis，effects of sudden expansion width，change of drop sill depth，different combinations of drop and expansion combinations on pool length of stilling pool were further given.Relatively speaking，effect of increasing burst width on reduction of stilling pool length was less than that of increasing fall depth.At the same time，increasing bursting width and fall depth could more effectively reduce required length of stilling pool.

Spatial and Temporal Variation Characteristics of Cultivated Land and its Driving Factors in Huai′an City

JIANG Jiao, SUN Zhe, ZHAO Siyuan, CHEN Shiliang, JIN Sihui, CHEN Jing

2020, 10(12): 63-69.

Abstract(409) [PDF 7723KB](56)

Abstract:
Huai′an City is located in Huanghuai Plain and Jianghuai Plain，which is a big agricultural city in the north of Jiangsu province.The study on spatial and temporal characteristics of cultivated land and its driving factors can provide guidance for ensuring food production and agricultural sustainable development.Based on land use data of 2000，2010 and 2018，spatiotemporal change characteristics of cultivated land in Huai′an City from 2000 to 2018 were analyzed by integrating land use transfer matrix，land use dynamic degree and multiple stepwise regression analysis，and driving forces were studied combined with social and economic indicators.Decreasing speed of cultivated land area has been accelerating from 2000 to 2018.Reduced area of cultivated land was mainly concentrated in the northern part of Qingjiangpu district，and transfer area between cultivated land and urban and rural industrial and mining residential land was more.Change of cultivated land was affected by economic development and income level，and tertiary industry was core driving force of cultivated land change.While developing economy，Huai′an city should pay more attention to protection of cultivated land resources，strengthen land consolidation，improve efficiency of land use，optimize utilization and allocation of land resources，and ensure sustainable utilization of cultivated land resources.

Simulation Analysis of Moisture Movement in Wheat Field Micro-sprinkler Irrigation

YANG Kun, LIU Lin, ZHANG Yangmeng, YUAN Jin, ZHANG Yan

2020, 10(12): 70-77.

Abstract(362) [PDF 8183KB](35)

Abstract:
According to characteristics of moisture distribution of micro sprinkler irrigation in the middle and late stage of winter wheat，soil moisture movement and distribution in the root zone of wheat in the middle and later stages of wheat were discussed under different irrigation factors.Irrigation intensity under different irrigation pressure was measured by experiment.Effective humid region was divided into four sub-regions，and different irrigation intensity was obtained as irrigation boundary condition.Considering water absorption of winter wheat roots，equations of micro-sprinkler irrigation soil water movement and solving conditions were established.By comparing and analyzing simulation results and experimental data of micro-spray irrigation，HYDRUS-2D numerical simulation was proved to be effective in soil moisture distribution.On the basis of this model，influence factors of different irrigation pressure，different irrigation lower limit and different laying distance of micro-spray belt were simulated and analyzed.Results showed that effective wet area was large and water distribution could meet demand of wheat root system without water waste under irrigation pressure of 0.15 MPa；taking 60% of field water capacity as lower limit of irrigation was beneficial to reduce laying cost of micro spray belt，save irrigation water and increase utilization rate of irrigation；at interval of 440 cm，soil moisture distribution in the root was a uniform band，and uniformity was about 90%，which could make each wheat get the same irrigation water quantity.Above results could not only provide reasonable operation parameters for laying and running of micro-spray belt，but also provide theoretical reference for water-saving irrigation of wheat.

Design and Experiment of Device for Ring-cut Cluster Branch Separation Unit of Green Prickleyash Picking Machine

SHAO Weixing, WANG Yuanming, WU Yu, SONG Shumin, PANG Youlun, LI Ying

2020, 10(12): 78-83.

Abstract(359) [PDF 11045KB](53)

Abstract:
During harvest of green pricklyash，most of protruded oil glands on peel are easy to break，which causes fruit to turn black after dry，and effective components volatilize，which seriously affects quality.Damage degree of oil bud of green pricklyash directly affects its quality.In order to realize mechanized harvesting of green pricklyash，under premise of ensuring low damage rate of oil bud，based on principle of branch loop cutting，a kind of spike and branch separation device of green prickleyash harvester was designed.Structural parameters and operation parameters affecting the harvest were obtained through theoretical analysis.According to physical characteristics and machining economy of branches，structural parameters and operating parameters were optimized.Angle of ring cutting edge，speed of ring cutting tool and feeding speed of branch were selected as experimental factors.Harvest efficiency and damage rate of oil bud were used as evaluation indexes.Single factor and quadratic orthogonal rotation combination tests were carried out.Response surface method was used to analyze test results，and multi-objective optimization algorithm of Design-Expert software was used to optimize parameters.Results showed that，main factors affecting harvest efficiency and damage rate of oil bracts were feeding rate of branches.Effects of various factors on harvesting efficiency and damage rate of oil bracts were in descending order from the top to the bottom：feeding speed of branches＞revolving speed of ring cutting＞angle of ring cutting edge.With increase of feeding speed of branches，harvesting efficiency increased rapidly，and damage of oil bud increased sharply after first slow increase.With increase of rotary speed of ring cutter，harvest efficiency did not increase obviously.When feeding speed was less than 0.4 m/s，damage rate of oil bud decreased slightly at first，then stabilized，and finally increased slightly with increase of rotary speed of ring cutter.When feeding speed was greater than 0.4 m/s，damage rate of oil bud decreased steadily with increase of rotary speed of ring cutter.Optimal parameter combination of the device was as follows：rotation speed of ring cutter was 2 800 r/min，feeding speed of branches was 0.45 m/s，and angle of ring cutting edge was 25°.Field experiment with prototype showed that harvesting efficiency and damage rate of oil bract was 50.7 kg/h and 6.7% respectively，which were better than current manual picking.

Innovative Design and Practical Application of Precision Sowing，Fertilizing and Film Spreading Machine for Millet

YANG Ruiqin

2020, 10(12): 84-89.

Abstract(381) [PDF 4591KB](47)

Abstract:
Aiming at research and development of millet precision seeding and fertilizing machine，five key parts were designed.Firstly，coaxial transmission used gears instead of chains to change speed.Speed changing structure between ground wheel drive and seeding device was simplified.Chain breaking and falling was avoided.Secondly，connecting frame was respectively installed with connecting seats，so that position of earth covering rod could be adjusted and covering soil could be accurately controlled.Thirdly，an open clapboard plate was set between scooping tray and storage tray，which could control amount of seed taken by tray step by step.Fourthly，ground wheel had set up covering hole to make soil fall into seed hole through covering hole，so as to ensure that amount of soil in each hole was the same.Fifthly，sowing plate could adjust chain drive tightness，accurately adjust sowing amount，save seeds and reduce cost.This machine solved problem that farmers needed more labor force to thinning seedlings in process of millet production，and realized maximum effect of millet free thinning and high yield and cost saving in key production links.

Training Program Optimization of Agricultural Mechanization and Automation Major Based on the Excellent Agriculture and Forestry Talent Education and Training Plan 2.0

XU Liming, LI Hongwen, HE Jin, SONG Jiannong, WANG Qingjie, LIU Cailing, MAO Ning

2020, 10(12): 90-94.

Abstract(471) [PDF 20363KB](67)

Abstract:
Agricultural mechanization and automation major of China Agricultural University has made gratifying achievements since it was founded in 1952.Based on background of the times and needs of development，the major actively optimized training program，comprehensively optimized training objectives，curriculum system，experimental practice and internationalization and other aspects，aiming to cultivate the first-class talents who have Chinese characteristics，international vision，understand agriculture，love the countryside and farmers，and serve revitalization and development of rural areas，ecological civilization construction and beautiful China construction.

Exploration of Food Machinery and Equipment Experiment Teaching with Combination of Online and Offline Modes

WANG Yequn, WANG Yunyang, GAO Zhenpeng, LI Zhenyu, WANG Shaojin

2020, 10(12): 95-97.

Abstract(368) [PDF 3265KB](47)

Abstract:
Food machinery and equipment experiments are based on food machinery.Correct understanding and operation of equipment is main goal of the experiment.Due to complex structure of food machinery，traditional teaching materials with pictures and text are not clear enough to express the equipment，which makes it difficult for students to grasp structure and working principle of food machinery.Teaching mode of combination of“online+offline”in the food machinery and equipment experiment class was put forward.That was，students previewed and recognized the equipment online through rich teaching resources，and then teachers conducted offline on-site experimental teaching.This combination of“online+offline”teaching method could enhance students′ interest in study of food machinery and equipment experimental courses，and help students understand the structure，principle and working process of food machinery in depth.

Exploration on Problem Oriented Teaching of Experiment Course of Agricultural Materials Engineering Characteristics

XIAO Weihua, JU Zhaoyang, YANG Zengling, LIU Xian, HUANG Guangqun, HAN Lujia

2020, 10(12): 98-101.

Abstract(385) [PDF 4163KB](46)

Abstract:
Teaching of experimental course on agricultural materials engineering characteristics plays a key role in cultivating postgraduate students′ consciousness of scientific research and innovation，and providing data of agricultural materials basic engineering，etc.in agriculture and forestry colleges.Most of traditional teaching experiments only copies experimental instruction and reproduced data repeatedly，while ignores theoretical basis and subjective initiative ability of postgraduate students.It was proposed that experimental course of agricultural materials engineering characteristics was guided by needs of students′ scientific research topics，and included scanning electron microscope，atomic force microscope，infrared spectroscopy and so on.Physical and chemical characteristics of agricultural materials were characterized and analyzed throughout.Finally，effectiveness of the course could be significantly improved through writing thesis report and evaluating mutually in team.

Effects of Different Matrix Ratio on Cucumber Seedling Growth

LU Kun, LI Meichen, QIN Yong

2020, 10(12): 102-106.

Abstract(397) [PDF 4771KB](50)

Abstract:
Studying effects of different matrix ratio on growth of cucumber hole dish seedlings，can provide reference for cucumber hole dish seedlings in Hotan area of Xinjiang.Hole dish seedling technique was applied，coconut chaff，commodity organic fertilizer and sand were mixed to form a composite substrate according to different volume proportions for cucumber seedling raising.Five treatments and one control were set.Control substrate ratio was coconut chaff∶commercial organic fertilizer =20∶1，and substrate ratios of five treatments were coconut chaff∶sand∶organic fertilizer=16∶1∶1，coconut chaff∶sand∶organic fertilizer=18∶1∶1，coconut chaff∶sand∶organic fertilizer=20∶1∶1，coconut chaff∶sand∶organic fertilizer=22∶1∶1，coconut chaff∶sand∶organic fertilizer=24∶1∶1，and each treatment was repeated three times.Results showed that comprehensive subordinate function value of cucumber seedlings was higher and better than that of the control（coconut chaff∶organic fertilizer=20∶1） when substrate ratio was coconut chaff∶sand∶organic fertilizer=22∶1∶1.Under conditions of this experiment，the ratio of coconut chaff∶sand∶organic fertilizer=22∶1∶1 was used as substrate of cucumber plug seedling growth in Hotan area，which was beneficial to cultivation of strong cucumber seedlings，and could be used as substrate ratio of cucumber plug seedling in solar greenhouse in Hotan area.

High Yield Cultivation Techniques of Sunflower with Full Film Double Furrow Sowing in Chifeng City

SUN Yudan

2020, 10(12): 107-110.

Abstract(410) [PDF 3814KB](39)

Abstract:
On basis of expounding present situation of sunflower development in Chifeng city，planting method of sunflower full-film double-ridge planting was explored from many aspects，such as land preparation，fertilization and ridge raising，selection of improved varieties，soil disinfection，row and ridge laying，film mulching，application of seed fertilizer，seed coating treatment，timely sowing，reasonable close planting，strengthening field management and timely harvesting.It was expected to share technical experience with farmers，further improve sunflower yield and quality，and create greater benefits.

WEI Xiuju

2020, 10(12): 111-114.

Abstract(407) [PDF 4111KB](50)

Abstract:
With announcements of a series of policies about the third-party assessment（Abbreviation：TPA），the third-party evaluation has been extended all over the society.It is promoted systematically from single task to whole society.The paper attempts to analyze importance of the TPA in technology management and government supervision under reform improvement of administrative system in many fields in China，analyze development situation of TPA in deferent fields，and analyze characteristics and market situation of agricultural engineering projects.Research showed that environmental condition of TPA was formed already.TPA was demanded by both agricultural engineering consultation industry and its market supervision by government.The third-party assessment was inevitability and the trend in agricultural engineering consultation market.Study result could lead the third-party assessment development，be accepted and be responded positively by organization in agricultural engineering consulting field.

Influencing Factors on Agricultural Plastic Film Recycling Behavior of Cotton Farmers in Xinjiang：Based on Survey Data of Cotton Farmers in the First and Seventh Divisions of Xinjiang Production and Construction Corps

SHI Lu, LI Bo, WANG Long, HU Can, WANG Xufeng

2020, 10(12): 115-119.

Abstract(391) [PDF 5218KB](47)

Abstract:
In order to solve serious problem of residual plastic film pollution in cotton fields in Xinjiang，cotton farmers of two typical cotton planting areas were investigated to study behavior of cotton farmers in recycling agricultural plastic film.Descriptive statistics and binary logistic regression model were used to analyze factors affecting behavior of cotton farmers in recycling agricultural plastic film.Results showed that cotton farmers′ age，education level，frequency of plastic film recycling and cognition of residual film pollution had significant effects on cotton farmers′ behavior of recycling agricultural plastic film.Cognition of residual film pollution of cotton farmers had a great influence on behavior of recycling agricultural plastic film.Therefore，increasing publicity of residual film pollution hazards，establishing a comprehensive management mechanism of agricultural plastic film recycling，is beneficial to improve current situation of cotton residual film pollution in Xinjiang and realize sustainable development of agriculture.

Development Countermeasures of Shaanxi Characteristic Town under Background of Rural Revitalization Strategy

REN Dapeng, JIANG Fengxiang

2020, 10(12): 120-123.

Abstract(519) [PDF 3609KB](37)

Abstract:
Under background of Rural Revitalization Strategy，Shaanxi promotes construction and development of characteristic towns，which can not only promote optimization of rural industrial structure，but also fully tap natural and cultural historical resources of small towns，so as to realize characteristic development and sustainable development of small towns.Shaanxi should adjust measures to local conditions，combine with rural agricultural resources，improve innovation of development of characteristic towns，pay attention to industrial design of characteristic towns，and develop a variety of development modes of characteristic towns.Development status of Shaanxi characteristic towns was mainly introduced，problems existing in development were pointed out，and corresponding countermeasures and suggestions were put forward，in order to promote further healthy development of Shaanxi characteristic towns.

Development Status and Suggestions of Chestnut Industry in Shangluo City

DUAN Kai, YAN Li

2020, 10(12): 124-126.

Abstract(448) [PDF 2832KB](60)

Abstract:
Shangluo city is located in the Qinling Mountains，temperate continental climate，suitable for tree growth，rich in forest resources，is the best suitable area for chestnut.Chestnut industry has become an advantageous industry in Shangluo region.Taking development of chestnut industry in Shangluo city as research object，a series of problems existing in development of chestnut industry in Shangluo city were obtained by combing current situation and analyzing problems，and relevant suggestions were put forward to promote better development of chestnut industry in Shangluo city.

2020 Vol. 10, No. 12

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