夏玉米直播配套高产栽培技术朱崇民王振吉葛成涛潘玉民一、选用中早熟高产紧凑型品种夏玉米直播，生长期短，生长速度快，有效积温不足是影响产量的主要障碍。因此，选用中早熟紧凑型高产品种，主要是西玉三号、掖单二号、掖单２２、掖单１３。这几个品种的生育期９０天～... Summer maize live broadcast supporting high-yielding cultivation techniques Zhu Chongmin Wang Zhenji Ge Chengtao Pan Yumin First, the selection of mid-early maturing high-yielding compact varieties of summer maize direct seeding, short growth period, fast growth, insufficient effective accumulated temperature is the main obstacle to yield. Therefore, the selection of medium and early maturing compact high-yield varieties, mainly Xiyu No. 3, Yeda No. 2, Yedan 22, Yeda 13. These varieties of 90 days of growth period ...