山西农业大学学报（自然科学版）2012，Vol.32Issue(5)：403-407,5.
密度对两个春玉米品种产量及产量相关性状的影响
Effects of Plant Density on the Yield and Its Related Traits in Two Spring Maize Varieties
摘要
Abstract
Two spring maize varieties were used to study the effects of different plant density on maize yield and related traits by two-factor split plot experiment design. The result showed that leaf area index (LAI) of Qiangsheng49 and Aoyu3101 increased with the increase of density. The LAI increased slowly at early stage, fast at middle stage and reached the maximal value at spinning stage. Density had an insignificant effect on LAI values of the two varieties. There existed a linear relation between spike number, grain number per spike, 100-grain weight and density, respectively. There was positive linear relation between spike number and density, while negative linear relation existed between grain number per spike, 100-grain weight and density. The yield showed a curve that increase in the beginning and then drop as plant density increased. The relationship of yield of these two varieties and density were conformed to a quadratic regression equation. The suitable plant density of Qiangsheng49 and Aoyu3101 were about 42 645 and 53 745 plants per square hectare, respectively under this experimental condition. With this suitable plant density, the yield of Qiangsheng49 and Aoyu3101 were 11 820. 3 and 11 225. 55 kg · hm-2 , respectively.关键词
玉米/春播/密度/产量/产量相关性状Key words
Maizes Spring sowing/ Density/ Yield分类
农业科技引用本文复制引用
范龙秋,杜天庆,郝建平,马磊磊,郝科栋,邢江会,李明..密度对两个春玉米品种产量及产量相关性状的影响[J].山西农业大学学报（自然科学版）,2012,32(5):403-407,5.基金项目
山西省科技攻关项目(2006031041,20100311002-9) （2006031041,20100311002-9）
国家星火计划项目(2011GA630001) （2011GA630001）
