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选用先玉335、郑单958和512-4不同株型的夏玉米品种,设置60 000株/hm2和75 000株/hm2两个种植密度和50、60、70、80 cm等行距以及80+40 cm宽窄行5个行距处理,研究不同种植模式对夏玉米的生理生态效应和产量影响。结果表明,60 cm等行距处理下,群体光辐射分布较为合理,田间小气候的控制较为安全,有利于提高抗逆性,能够在不同的品种和密度条件下获得较高产量,是目前黄淮海区夏玉米机械化生产较为适宜的播种行距。
Two maize varieties with different plant types of Xiangyu 335, Zhengdan 958 and 512-4 were selected to set the planting density of 60 000 plants / hm2 and 75 000 plants / 40 cm wide and narrow row 5 row spacing treatment to study the different planting modes of summer maize ecophysiological effects and yield. The results showed that the population light radiation distribution was reasonable under 60 cm spacing treatments and the control of field microclimate was safer, which was beneficial to improve the resistance and to obtain higher yield under different varieties and densities. Summer corn mechanized production more suitable sowing row spacing.