一、选用良种和种子处理(一)选用良种选用优良的玉米杂交种,是获得玉米增产的关键技术措施之一。(二)精选种子品种优良并不等于种子质量好。种子质量的好坏与苗全、苗齐、苗壮有直接关系。(三)种子处理种子处理的办法很多,首先最好的办法是用种衣剂包衣,其次还有浸种、拌种和晒种等。二、夏玉米早播是增产的关键措施之一(一)早播增产的原因1、早播可以满足玉米对光、热的需求。2、早播可以发挥中晚熟杂交种 First, the selection of seed and seed treatment (A) Selection of elite varieties of hybrid corn selection, access to corn yield is one of the key technical measures. (B) fine selection of seed varieties does not mean good seed quality. The quality of seeds and seedlings all, Miao Qi, Miao Zhuang has a direct relationship. (C) seed treatment There are many ways to deal with seeds, the first is the best way to use seed coating, followed by soaking, seed dressing and sunning. Second, the early summer corn is one of the key measures to increase production (A) the reasons for early sowing production 1, early sowing to meet the corn light, heat demand. 2, early broadcast can play late hybrids