论文部分内容阅读
为2BMFJ系列大豆免耕覆秸精量播种机不同机型选择适宜的排种器,比较排种器排种性能优劣,以气吸式排种器和机械式排种器为研究对象,依据GB6973-2005《单粒(精密)播种机试验方法》,在JPS~(-1)2计算机视觉精密排种器性能检测试验台上实施正交与多重比较组合试验研究,以排种器类型、作业速度和百粒重变异系数为试验因素,粒距合格指数、重播指数、漏播指数和变异系数与经济性为评价指标。结果表明:排种器类型对于株距合格指数、重播指数和变异系数均为主要影响因素,作业速度对株距漏播指数的影响最为显著。在作业速度低于5 km·h~(-1)时,机械式排种器和气吸式排种器排种性能无显著差异,当作业速度高于5 km·h~(-1)时,气吸式排种器的作业性能优于机械式排种器。在百粒重变异系数大于7.6%时气吸式排种器的排种性能均优于机械式排种器。机械式排种器可用于2BMFJ-3/6型播种机;2BMFJ~(-1)0型播种机应采用气吸式排种器。
2BMFJ series of soybean no-tillage straw sowing precision selections of different types of seeding machine to compare the pros and cons of seeding performance, air-suction seeding machine and mechanical seeding machine as the research object, based on GB6973-2005 “single grain (precision) planter test method” in the JPS ~ (-1) 2 computer vision precision seeding performance test bench to carry out orthogonal and multiple comparison test combined with the type of device, The operating speed and coefficient of variation of 100-grain weight are the experimental factors, the grain-passing index, replay index, leakage index, coefficient of variation and economy as evaluation indexes. The results showed that the type of seeding device was the main influencing factor for plant spacing index, repeatability index and coefficient of variation. The effect of operating speed on the spillage index was the most significant. When the operation speed is less than 5 km · h -1, there is no significant difference in seeding performance between mechanical seeding device and air suction seeding device. When working speed is higher than 5 km · h -1, Air-suction seed metering device operating performance superior to mechanical seed metering device. When the coefficient of variation of 100 kernel weight is more than 7.6%, the performance of air-suction seed metering device is better than that of mechanical seed metering device. Mechanical seed metering device can be used 2BMFJ-3/6 sowing machine; 2BMFJ ~ (-1) 0 sowing machine should be air-suction seed metering device.