一、种植地膜玉米首先要用细整地，达到深、墒、碎、平、净、齐大字标准1．深犁地深度不够，不利于作物后期生长。2墒墒度过大，土镇粘性大，一方面易粘附到播种机鸭嘴上，堵塞鸭嘴，造成空穴，另外，土壤碾压后易出现板结，覆土效果也不好；土田墒度不够，会使出苗率大大降低? First, the cultivation of plastic corn first fine-grained to reach deep, moisture, broken, flat, net, Qi characters standard 1. Deep plow depth is not enough, is not conducive to late crop growth. 2 moisture content is too large, the town of sticky, on the one hand easy to adhere to the seeder Duckbill, plug Duckbill, resulting in holes, in addition, prone to compaction of the soil after crushing, soil covering effect is not good; soil moisture Degree is not enough, will greatly reduce the emergence rate?