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以玉米三种垄作形式为主要内容 ,研究不同垄作的增产机制及相应的群体结构 ,提高玉米大面积连片种植的单产水平。试验表明 :大垄和大小垄种植方式具有保持和提高土壤温度、水分 ,抗旱抗涝的作用 ,同时适于密植 ,光能利用率高等特点 ,比常规小垄玉米增产 1 4%～ 2 2 .8%。适宜密度 6～ 7万株 /hm2 。
Taking the three forms of corn as the main content, the research on the mechanism of increasing production and the corresponding group structure of different ridge-planting and the yield per unit area of contiguous corn planting were carried out. The results showed that the planting pattern of large ridge and small ridge had the effect of maintaining and increasing soil temperature, moisture and drought-resistant and waterlogging while being suitable for close planting and higher utilization rate of light energy, which increased 14% ~ 22 compared with conventional small ridge corn. 8%. Suitable density of 6 to 70,000 / hm2.