To investigate feasibility of applying mechanized cultivation mode to tomato product in Chinese solar greenhouses of Shanxi Province, a mechanized cultivation mode was developed to replace labor-intensive manual tasks involved in traditional product method.Under mechanized cultivation mode, mechanization level of solar greenhouses was increased from 38.5% to 73.3%.Labor consumption was saved by 113.10 working-day/hm2.The change in net present value was calculated as 29281 yuan/hm2.These findings demonstrated that it was feasible to apply mechanized cultivation mode to tomato product in solar greenhouses of Shanxi Province.Moreover, this mode could offer a potential solution to challenges arising from increased labor shortage and costs in future.
In order to solve problem of header profiling in fresh corn harvester which reaping both corn stalk and spike, an adaptive profiling system for header of fresh corn harvester was developed based on principle of ultrasonic ranging.In this system, ultrasonic ranging sensor was installed in the front end of header divider, which was used to detect height difference between header divider and ground in real time.Height difference signal was transmitted to central control terminal of corn harvester, which issued corresponding adjustment instruction, controlled header adjusting hydraulic system to adjust header height, and realized adaptive profiling of corn harvester's header during operation.The 190 kW four-line all-harvesting fresh food corn harvester was used as a prototype, and adaptive profiling system of header was carried out to verify profiling system.Average operating speed of corn harvester was 4 km/h, rotation speed of cutting table was 400 r/min, and stubble height was from 90 mm to110 mm.Test results showed that in whole process of 8 hours of cumulative operation, header adjustment was stable and there was no contact with the ground.Experimental results verified effectiveness of header adaptive profiling system.
With implementation of policies for national, local, and temporary storage of corn, planting area of corn has significantly increased, and yield of corn straw has also increased.Corn straw contains abundant crude fiber, organic matter, and nutrients such as nitrogen, phosphorus, magnesium, potassium, and calcium required for plant growth.Implementing straw returning to field can effectively enhance soil fertility, improve soil physical and chemical properties, promote black soil protection, promote sustainable land use, and promote sustainable agricultural development.Main methods of returning straw to field include direct return and indirect return.Selection of land return methods should be tailored to local conditions, and selecting appropriate land return methods based on soil conditions can effectively protect farmland environment.Characteristics of different straw returning methods were introduced, impact of straw returning on soil environment was analyzed.It could provide scientific basis for selecting straw returning methods according to local conditions and sustainable agricultural development paths.
Under support of information technology, great changes have taken place in agricultural production.With information technology, agricultural production has gradually realized development of intensification, high efficiency and intelligence.Based on this background, a long-stroke integrated water and fertilizer spraying device driven by intelligent tracked vehicle was designed, which included intelligent motor, flox coupling, support plate, sprinkler head, speed sensor and other components.At the same time, an efficient control system was designed.The whole system included homepage system interface, monitoring system interface, data display interface, real-time parameter interface and other parts.And real-time monitoring of GPS, fertilizer
In order to reveal effects of natural factors and their interaction on temporal and spatial changes of vegetation in Kaidu River Basin, using
In order to solve problems of low efficiency and high cost of
Restricted by type of schools, agricultural and forestry graduates often have some difficulties in finding jobs, such as few job choices and low employment quality.Smart car competitions can help students master professional knowledge and skills.As a national competition integrating technological innovation and theoretical innovation, smart car competition can effectively improve employment level and competitiveness of students by participating in smart car competition.In order to promote students' good employment and employment through smart car competitions, it needs joint efforts of students, universities and society.It also need to actively carry out innovation and entrepreneurship education, strengthen ideological and political theory construction and accelerate construction of competition platforms in daily teaching.
After years of exploration, fertilizer reduction technology in dry farming area of Yuzhong County, Gansu Province has gradually matured, and has been demonstrated and promoted in major crops, providing scientific data support and precise and strong technical support for fertilizer reduction and efficiency improvement in Yuzhong County.From balanced regulation of nitrogen, phosphorus, and potassium fertilizers to precise formula fertilization according to demand, and then to integration of fertilizer reduction and efficiency enhancement technology through increasing application of organic fertilizers to replace(reduce)fertilizers and improving traditional fertilization methods, from 2018 to 2022, cumulative promotion area in major crops such as vegetables, corn, potatoes, wheat, lilies, and traditional Chinese medicine was 866700 hm2, with an additional net income of 1.283 billion yuan.Through experiments with different amounts of organic fertilizer for Songhua vegetable, results showed that yield of Songhua vegetable increased with increase of commercial organic fertilizer usage, and commodity rate increased from 46.73% to 50.33%.Through experiments with different amounts of bio organic fertilizer for cabbage results showed that after using bio organic fertilizer and reducing amount of fertilizer by 20%, total phosphorus, dietary fiber, and calcium content of commercial cabbage decreased significantly compared to control, while vitamin C content increased in all treatments.This indicated that cabbage has a more fragrant taste, richer nutrition, and improved quality.The recommended optimal amount of bio organic fertilizer was 3 t/hm2, with a maximum reduction of 20% in chemical fertilizer.
Taking selenium rich tea industry in Ankang City, Shaanxi Province as research object, current development status of selenium rich tea industry in Ankang City was introduced from five aspects: industrial scale, private economy, brand value, scientific research and development, and tea tourism integration.SWOT analysis method was used to comprehensively analyze market competition conditions and environment of selenium rich tea industry in Ankang City from four dimensions: policy support, economic foundation, social background, and technological strength.And countermeasures and suggestions for technological, branding, market-oriented, and sustainable development of selenium rich tea industry in Ankang City were proposed from three levels: government, industry, and enterprise.