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一、选用竖叶型高产品种品种是农业生产中最具有关键性的因素,玉米要获得高产,必须选用竖叶型耐密植品种,目前比较适宜在我市种植的竖叶型高产优质品种主要有郑单958、浚单20、济单8号、浚单18、浚单22、中科4号、中科11号等。二、宽窄行种植,适当增加密度高产必须有一定的密度作保障。要改变过去的稀植习惯,在目前不足4000株/667平方米的基础上,适当增加密度,一般500千克以上产量的竖叶型品种密度要达到4500株/667平方米左右,提倡宽窄行种植,一般宽窄行距80厘米,窄行距40厘米。
First, the choice of vertical leaves of high-yielding varieties is the most crucial factor in agricultural production, corn to obtain high yield, we must choose the vertical leaf-tolerant close-planting varieties, currently suitable for planting in our city vertical-type high yield and quality varieties are Zheng Dan 958, Xundan 20, Ji Dan 8, Xundan 18, Xundan 22, 4 in the Section, Section 11 and so on. Second, the width of the line planting, appropriate to increase the density of high-yield must have a certain density for protection. To change the past thinning habits, less than 4,000 in the current / 667 square meters, based on the appropriate increase in density, generally more than 500 kg of yield vertical leaf type varieties to reach 4500/667 square meters, to promote wide and narrow line of planting , The general width 80 cm spacing, narrow spacing 40 cm.