玉米株行距配置的密植增产效果研究

Effects of Allocations of Row-spacing on Maize Yield under Different Planting Densities

研究不同株行距配置在3种种植密度下对玉米产量的影响,寻求通过改变种植模式提高密度的新途径。以普通株型玉米品种‘农大108’为供试品种,3种种植密度为主处理,5种株行距配置方式为副处理,裂区设计,通过对组成的15个试验处理的产量测定与分析,探索株行距配置的密植增产效果。结果表明,产量随密度的提高而增加;株行距配置与密度的互作效应在52500株/hm2时最为明显;此试验中获得最高产量的种植模式是52500株/hm2密度下0.60m等行距种植,与传统种植习惯比较,增产了23.27%。因此,普通株型玉米品种可以通过株行距合理配置的方式,提高种植密度,达到增产效果。

The objectives of this study were to investigate the influences of row-spacing on maize yield under three planting densities,and also to seek new ways to increase density by changing cropping pattern.Field experiments were conducted in 2008 to study the regulatory effect of five different allocations of row-spacing on grain yield under three planting densities.Experimental design was Split Plot Design with main treatments of density and vice treatments of different spacing configurations.Test variety was provided ＇ Nongda 108 ＇.The results showed that the yield increased as the density increasing.The most obvious interaction effect occurred between density and row-spacing in 52500 plants/hm 2.In this experiment,the cultivation of high yield model was 52500 plants/hm 2 density with 0.60 m equal planting spacing,compared with traditional cultivation method,the yield increase rate was 23.27%.Reasonable allocations of row-spacing could increase planting density and finally increase the maize grain yield.