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以中晚熟品种郑单958和晚熟品种丹玉405为试验材料,采用裂区设计,在3种不同种植形式和3种不同密度条件下,对玉米品种与密度、品种与种植形式互作的关系进行比较分析。结果表明,郑单958在二比空种植形式60 000株/hm2下产量最大,为11 726.71 kg/hm2;丹玉405在二比空种植形式49 500株/hm2下产量最大,为11 092.03 kg/hm2。郑单958和丹玉405在各自产量最高时,百粒重、穗行数和行粒数均最大,两个品种在二比空种植形式下功能叶的叶面积指数和净光合速率较高。
The middle and late maturing varieties Zhengdan 958 and the late maturing variety Danyu 405 were used as materials to study the relationship between maize varieties, density, varieties and planting forms under three different planting forms and three different densities For comparative analysis. The results showed that Zhengdan 958 had the highest yield of 11 726.71 kg / hm2 under 60% two-empty-planted form and 11 092.03 kg / hm2. Zhengdan 958 and Danyu 405 had the highest 100-grain weight, panicle number and grain number per line at the highest yield. The leaf area index and net photosynthetic rate of functional leaves of two cultivars were higher under the two-empty planting patterns.