Structure and sowing principles of rice rope direct seeding machine are introduced. In order to test the machine＇ s working performance, such as compacting effect, sowing depth, influence of sowing device to rice rop...Structure and sowing principles of rice rope direct seeding machine are introduced. In order to test the machine＇ s working performance, such as compacting effect, sowing depth, influence of sowing device to rice rope, etc., field experiments were conducted. It is concluded that mean slip ratio of compacting wheel 1 is 4.44%, wheel 2 is 5.58%, wheel 3 is 7.81%, and wheel 4 is 6.96%; mean depth of planting is 29.72 mm, and mean variability coefficient of planting depth is 6.39%. Maximum variability coefficient of planting depth is 8.40%. Rice rope＇s snapping is closely related with the machine＇s speed and guide thread wheel by sowing device orthogonal experiments. Test results show that the machine has a rational design, safe work and meets to the requirements of planting. This study has laid the foundation for further studying the project.展开更多
[Objective] The aim was to introduce the development and application of 2BDQ-8 rice direct sowing machine and provide a theoretical basis for rice mechanization production. [Method] 2BDQ-8 rice direct sowing machine w...[Objective] The aim was to introduce the development and application of 2BDQ-8 rice direct sowing machine and provide a theoretical basis for rice mechanization production. [Method] 2BDQ-8 rice direct sowing machine was used for the promotion test in field of several cities and counties in Jiangsu Province,and artificial rice planting and mechanization rice planting were compared to explore the production and economic situation. [Result] 2BDQ-8 rice direct sowing machine had advantages such as high efficiency and low cost,the rice direct sowing machine saved about 30% compared to the artificial rice planting and mechanization rice planting,and the overall efficiency was significant. [Conclusion] 2BDQ-8 rice sowing machine was a production technology that had low cost and high efficiency,which should be widely applied.展开更多
This study aimed to resolve the problems of full wheat straw returning to the field,which might readily cause stalk obstruction,poor sowing quality,and serious weeds at the seedling stage,affecting the growth of maize...This study aimed to resolve the problems of full wheat straw returning to the field,which might readily cause stalk obstruction,poor sowing quality,and serious weeds at the seedling stage,affecting the growth of maize.Based on the idea of“simultaneous seeding and spraying,closed weeding”,this paper presented a design method for designing a corn seed-fertilizer-herbicide simultaneous operation machine,which focuses on the design of vertical active straw-removing anti-blocking device mechanism,design of nozzle key parameters,nozzle selection,seeding monomer analysis and spatial layout design of seed-fertilizer-herbicide mechanism.In addition,the interrelated formulas were deduced and machine design and field experiment were conducted.The experiment results showed that the average variation coefficient of spray uniformity of machines was 17.70%.The post-experiment weed amount was 8.9%,which was lower than that before sowing,8.5%lower than that before artificially closed weeding,and 14.3%lower than that in unenclosed weeding area.Moreover,the weeds were less in the working area of the machine,and the growth of corn was better.Compared with manual closed weeding,the average plant height uniformity and average stem diameter uniformity increased by 4.4%and 5.1%,respectively.Compared with unclosed weeding,the average plant height uniformity and average stem diameter uniformity increased by 18.3%and 10.8%,respectively.Overall,the rationality of the design method proposed in this paper was validated,and these can lay a foundation for the research and development of the same type of machine.展开更多
基金supported by the National Natural Science Foundation of China(50775150)
文摘Structure and sowing principles of rice rope direct seeding machine are introduced. In order to test the machine＇ s working performance, such as compacting effect, sowing depth, influence of sowing device to rice rope, etc., field experiments were conducted. It is concluded that mean slip ratio of compacting wheel 1 is 4.44%, wheel 2 is 5.58%, wheel 3 is 7.81%, and wheel 4 is 6.96%; mean depth of planting is 29.72 mm, and mean variability coefficient of planting depth is 6.39%. Maximum variability coefficient of planting depth is 8.40%. Rice rope＇s snapping is closely related with the machine＇s speed and guide thread wheel by sowing device orthogonal experiments. Test results show that the machine has a rational design, safe work and meets to the requirements of planting. This study has laid the foundation for further studying the project.
基金Supported by the Subprogram " the Mechanization Development of High Speed Rice Sowing-Rice Direct Sowing Machine" of the Programs of Science Research for the "10th Five-year Plan" of MinistryScience and Technology (2001BA504B01-02)~~
文摘[Objective] The aim was to introduce the development and application of 2BDQ-8 rice direct sowing machine and provide a theoretical basis for rice mechanization production. [Method] 2BDQ-8 rice direct sowing machine was used for the promotion test in field of several cities and counties in Jiangsu Province,and artificial rice planting and mechanization rice planting were compared to explore the production and economic situation. [Result] 2BDQ-8 rice direct sowing machine had advantages such as high efficiency and low cost,the rice direct sowing machine saved about 30% compared to the artificial rice planting and mechanization rice planting,and the overall efficiency was significant. [Conclusion] 2BDQ-8 rice sowing machine was a production technology that had low cost and high efficiency,which should be widely applied.
基金This research was financially supported by the Special Fund of Ministry of Agriculture of China for Public Welfare Projects(No.201503136)Science and Technology Project in Anhui Province(NO:1604a0702035).
文摘This study aimed to resolve the problems of full wheat straw returning to the field,which might readily cause stalk obstruction,poor sowing quality,and serious weeds at the seedling stage,affecting the growth of maize.Based on the idea of“simultaneous seeding and spraying,closed weeding”,this paper presented a design method for designing a corn seed-fertilizer-herbicide simultaneous operation machine,which focuses on the design of vertical active straw-removing anti-blocking device mechanism,design of nozzle key parameters,nozzle selection,seeding monomer analysis and spatial layout design of seed-fertilizer-herbicide mechanism.In addition,the interrelated formulas were deduced and machine design and field experiment were conducted.The experiment results showed that the average variation coefficient of spray uniformity of machines was 17.70%.The post-experiment weed amount was 8.9%,which was lower than that before sowing,8.5%lower than that before artificially closed weeding,and 14.3%lower than that in unenclosed weeding area.Moreover,the weeds were less in the working area of the machine,and the growth of corn was better.Compared with manual closed weeding,the average plant height uniformity and average stem diameter uniformity increased by 4.4%and 5.1%,respectively.Compared with unclosed weeding,the average plant height uniformity and average stem diameter uniformity increased by 18.3%and 10.8%,respectively.Overall,the rationality of the design method proposed in this paper was validated,and these can lay a foundation for the research and development of the same type of machine.
