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本试验以伟科702、先玉335为供试材料,采用裂区试验设计,分析深松与耕作密度互作方式对玉米植株生长生理特性及产量的影响。结果表明:深松措施提高了玉米高密度种植条件下的根冠比,有效改善了玉米营养器官干重的分布比例,提高了植株的抗倒伏性,降低玉米果穗秃尖程度,显著增加了玉米产量。其中伟科702经过深松处理后,种植密度在83 100株/hm~2时玉米产量达到最大值13 140 kg/hm~2,较不深松处理产量最大值(11 975 kg/hm~2)增产9.73%;先玉335经过深松处理后,种植密度在74 200株/hm~2时玉米产量达到最大值12 663 kg/hm~2,较不深松处理产量最大值(11 392 kg/hm~2)增产11.16%。
In this experiment, Weike 702 and Xian-Yu 335 were used as experimental materials to study the effects of subsoiling and tillage density on the physiological characteristics and yield of maize. The results showed that the subsoiling measures increased the ratio of root to shoot under high-density maize planting, effectively improved the distribution ratio of dry weight of vegetative organs of corn, increased the lodging resistance of the plants, reduced the baldness of maize ears and significantly increased the maize Yield. Among them, the treatment of Weike 702 reached the maximum of 13 140 kg / hm ~ 2 and the maximum yield of 11 707 kg / hm ~ 2 ) Increased by 9.73%. The yield of corn of Xiangyu 335 reached the maximum of 12 663 kg / hm ~ 2 after 74 000 plants / hm ~ 2 after subsoiling, and the highest yield of 11 335 kg / hm ~ 2) yield 11.16%.