Sichuan Agricultural University researched and developed the UAV rice direct seeding technology, which takes only 5 minutes to sow per mu (by Zhang Chao and wensha) on April 9, a UAV slowly lifted off in duiyan Town, Yucheng District, Ya'an City, flying around several mu of paddy fields
"this is the third generation UAV after improvement. The actual operation can complete the sowing of rice fields in front of us in more than 10 minutes." At the scene, wuzhijun, a teacher from the school of mechanical and electrical engineering of Sichuan Agricultural University, was looking at the computer and constantly adjusting various parameters of the UAV. "This test flight is to test the adaptability of the UAV to slope changes."
not long ago, Wu Xin's industry entrants had a low level of production technology. The Zhijun team successfully carried out the direct seeding of UAV rice in Sixi Town, Shanggao County, Yichun City, Jiangxi Province according to the relevant standard: BBT 0024 (2) 004. "The local temperature is high, and two seasons of rice are produced. The rice seedlings emerge soon after sowing. From the field situation, the sowing density and emergence rate are almost the same as expected."
it is learned that in 2016, wuzhijun's team devoted itself to the research and development of UAV rice direct seeding technology, and successively solved several major problems of UAV seeding
"the difficulty of UAV seeding lies in the structure of the seeder. It is a success to overcome the influence of natural conditions, accurately master the density of the seeded seeds and let them grow normally." Wuzhijun said that in view of this, the team adopted the "backward push" method to adjust the parameters of the seeder, in which Jinan assaying loading servo motor, high-precision displacement measuring mechanism control and high-precision load sensor form a closed-loop control system. For example, if the estimated yield of rice per mu is 600 kg, then the effective panicles are matched from the yield, accurate to every square meter, and then the number of rice plants required to be produced is calculated to adjust the parameters of the seeder, Ensure its uniformity
solves the problem of uniformity, and there is another difficult problem. In Sichuan, except Chengdu Plain, most of them are hilly areas, and the continuous change of height makes it difficult to control the density. "This requires upgrading the technology of UAVs." Wuzhijun's team cooperated with a professional company in the province to develop a UAV suitable for sowing in hilly areas. It can be seen from the test site that the UAV currently used by the team can intelligently screen the route, adjust the flight height and sowing speed, and then sow seeds
2018, Wu's greatest achievement: the chaos in soil politics was ended. The Zhijun team basically solved the problems in the whole process from "spreading" to "growing". According to the calculation, the yield of experimental rice per mu was about 550 kg, exceeding the average yield per mu in the province
at the same time, the efficiency has also improved a lot. It takes about 1.5 hours for manual seeding per mu, and only 5 minutes for UAV live broadcasting per mu, which is more accurate
at present, Sichuan Agricultural University has obtained two national patents for the UAV rice direct seeding technology. At present, wuzhijun's team is preparing for the comprehensive promotion next year