2BMFJ-3型麦茬地免耕精密播种机排种器选型试验研究

Experimental Research on Seed-metering Choice of 2BMFJ-3 Type No-till Precision Planter in Wheat Stubble Fields

为保证2BMFJ-3型麦茬地免耕大豆精密播种机播种大豆的性能,确定一种适合于该播种机的机械式精密排种器,参照GB6973-2005《单粒(精密)播种机试验方法》,以窝眼轮式、倾斜勺式和勺轮式排种器为研究对象,在JPS-12计算机视觉精密排种器性能检测试验台上实施了对比试验研究。结果表明:在作业速度3～6 km.h-1、粒距8 cm条件下,勺轮式排种器的排种性能最优,其合格指数87.8%～98.9%,重播指数0.5%～1.1%,漏播指数低于12%,变异系数小于16%,各项指标均达到国家标准优等品水平。

The comparative tests have been carried out on test-bed of JPS-12 seed-metering by GB6973-2005, Single （Preci- sion） Seeder Experimental Method, of which the seeding-metering of socket-roller, inclined spoon and spoon-roller were select- ed as the object. The objective was to improve the soybean seeding performance of 2BMFJ-3 type no-till precision planter in wheat stubble fields, and determine a kind of reasonable seeding-metering for the planter. The result indicated that the seeding performance of spoon-roller was the best, while operation speed was 3-6 km. h J and space was 8 cm, meanwhile qualified rate was 87.8%-98.9%, multiple rate was 0.5%-1.1% , missed rate was lower than 12% and variable coefficient was less than 16% ,and each index attached the level of superior quality.