大豆收获要求适宜的滚筒转速。当每分种转速超过800转时,就会加重大豆外部破碎和内部损伤,发芽率也相应降低。这种内部损伤从外部种皮上难以看到,只有在发芽试验中才能表现出来(大豆子叶不规则碎裂,胚轴断裂)。内部损伤的大豆虽然也萌发,但幼苗的养分供应和主根入土将受到影响,无法长成正常的幼苗。 1992年收获时,我们进行了E512收获机不同 Soybean harvest requires a suitable drum speed. When the speed per minute more than 800 rpm, it will increase the external soybean crushing and internal damage, the germination rate is also reduced accordingly. This internal damage is hard to see from the outer seed coat and only manifests itself in germination tests (irregular cotyledon crashes, hypocotyl breaks). Although the internal damage of soybean germination, but the nutrient supply of seedlings and the main root into the soil will be affected, can not grow into normal seedlings. When harvested in 1992, we conducted a different E512 harvester