夏玉米生产潜力大但生育期较短。为充分挖掘其生产潜力 ,增加密度 ,改善苗期生长势不强的状况 ,我们做了夏玉米麦后直播试验、示范。综合分析结果 ,夏玉米由麦垄套种点播器点播改为麦后开沟直播或玉米点播耧匀播 ,出苗率提高 2 5%;玉米幼苗整齐度达到 95%;每亩密度增加 3 5%;基 Summer corn production potential but shorter growth period. In order to fully tap its production potential, increase density and improve seedling growth is not strong situation, we made the summer corn wheat live broadcast test, demonstration. According to the results of comprehensive analysis, the summer maize was changed from on-demand on the sowing date to the post-wheat ditching or on-demand corn sowing, the germination rate increased 25%; the uniformity of maize seedlings reached 95%; the density per acre increased by 35% base