The testing result shows that there is a difference actual seed dropping angle and the one acquired by calculation , therefore , a formula for the calculation of seed dropping angle even closely suited to production practice has been driven out and a theoretical basis for the application of 2bqm - 2 model plastic film mulch pneumatic precision planter in practical production is advanced in this paper 通過試驗,找出種子的落種位置規(guī)律。通過試驗結(jié)果分析,找出種子的實際的落種角度和計算的落種角度之間的差別,推導(dǎo)出更適合實際生產(chǎn)中所需要的落種角度,為2bqm - 2型氣吸式精量鋪膜播種機在實際生產(chǎn)中的應(yīng)用提供了一定的理論基礎(chǔ)。