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以郑单958为试验材料,2011年在河南新乡设置耕作方式与种植密度田间试验,研究条带深松耕作方式对不同密度夏玉米群体产量性能的调控效应,明确条带深松耕作方式下夏玉米产量性能特征。结果表明,条带深松耕作方式下,夏玉米获得最高产量的最适密度为9.0×104株/hm2左右,较常规耕作方式下增加16.9%,平均增产10.9%。进一步分析高密度(9.0~10.5)×104株/hm2群体下夏玉米产量性能参数,条带深松耕作方式分别增加收获穗数、穗粒数、千粒重、干物质积累量、群体平均叶面积指数、平均净同化率、产量/平均叶面积指数比值分别为9.7%~10.5%、6.5%~8.2%、7.0%~7.7%、9.1%~12.4%、6.7%~9.2%、7.2%~9.1%、3.6%~17.1%。条带深松耕作方式通过产量性能参数的共效差异补偿机制实现密植夏玉米增产。
Taking Zhengdan 958 as test material, field experiments of tillage and planting density were set up in Xinxiang, Henan Province in 2011 to study the regulation effect of strip-tillage system on the yield performance of summer maize with different densities. Corn yield performance characteristics. The results showed that the optimum density of summer maize to get the highest yield was 9.0 × 104 plants / hm2 under the condition of strip deep-plowing and increased by 16.9% and 10.9% on average. The yield performance parameters of summer maize under high density (9.0 ~ 10.5) × 104 plants / hm2 population were further analyzed, the number of ears per ear, grains per spike, thousand kernel weight, dry matter accumulation, population mean leaf area index , The average net assimilation rate and the ratio of yield to average leaf area index were 9.7% -10.5%, 6.5% -8.2%, 7.0% -7.7%, 9.1% -12.4%, 6.7% -9.2%, 7.2% -9.1% , 3.6% ~ 17.1%. Slimline Subsoiling Tillage Method Achieve Increasing Mist Yield of Summer Maize with Co - Difference Compensation Mechanism of Yield and Performance Parameters.