栽培方式与群体结构对玉米生长发育及产量的影响

通过对不同栽培方式及群体结构下玉米的生长发育状况及产量进行比较分析，结果表明适宜的密度下宽窄行种植，可以改善群体结构，减少株间竞争，促进个体生长发育，提高其叶面积，增加其干物质积累，为经济产量的提高奠定物质基础。试验显示行距与密度之间存在明显互作，平展型玉米吉单180通过大双直栽培方式可以提高产量14．4％。

Study on The Influence of Cultivation Methods and Community Construction to Growth and Yield of Corn

The growth and yield of the corn in different cultivation methods and community construction were analyzed. It showed that the community construction was improved, the competition among individuals were less, the growth of individuals were better, the leaf areas were increased, accumulation of dried matter was increased under double rows on a big ridge cultivation of appropriate density. The material base was built for increasing economic yield. The experimentation also provided that there were marked mutual effect among row and density, Ji Dan 180 of unfold flat corn could increase yield to 14.4% through double rows on a big ridge cultivation.