密度和行距配置对耐密型玉米产量及其构成因素的影响

Influence of the Yield and Its Composition Factors of 2 Density-tolerant Maize Cultivars to Different Density and Row Spacing

以先玉335和大丰26为供试材料,采用3因素裂区设计,研究种植密度和行距配置对这2个玉米品种产量及其构成因素的影响。结果表明,在不同的种植密度及行距配置下,先玉335和大丰26的产量及其构成因素(穗数、穗粒数和百粒质量)之间差异均没有达到显著水平;不同种植密度对穗数、百粒质量及产量影响显著;不同行距配置对百粒质量与产量影响显著;密度与行距配置对百粒质量和产量存在显著或极显著的互作效应;先玉335与大丰26均在密度为8.1万株/hm2和66.6 cm+33.3 cm宽窄行配置模式下产量最高。

This study used maize varieties Xianyu 335 and Dafeng 26 as the experiment materials in a three-factor split plot experiment to explore the effect of planting density and line spacing on maize varieties yield and yield compounds.The result showed that the difference of yield and yield compounds including ear number,grain number per spike and 100-grain weight between Xianyu 335 and Dafeng 26 was not so significant.Ear number,100-grain weight and yield were significantly influenced by different planting density.Line spacing had a significant effect on 100-grain weight and yield.There was significant interaction effect on 100-grain weight and yield between planting density and line spacing.Under this study conditions planting density and line spacing were 81 000 plants per hm2 and wide-narrow row（66.6 cm＋33.3 cm） planting model respectively,the yield of Xianyu 335 and Dafeng 26 both were the highest.