北疆冷凉地区大豆密度试验  

Density Experiment of Soybean in the Cold North Region of Xinjiang

作　　者：陈新红[1] 章建新[1] 闫晓红[1] 闫晓平 丽那 

机构地区：[1]新疆农业大学农学院,乌鲁木齐830052 [2]新疆布尔津县窝依莫克乡,836600

出　　处：《新疆农业大学学报》2002年第1期5-8,共4页Journal of Xinjiang Agricultural University

基　　金：国家"十五"攻关项目 (2 0 0 1EP0 5 0 0 0 7);自治区科技兴农办资助

摘　　要：在低肥力沙土地上对大豆 6种密度群体结构的研究结果表明 :5 2 .5万株·hm-2 群体LAI消长平稳 ,开花期、结荚期和鼓粒期都保持较高值 ,分别为 5 .0 ,6 .2 ,3.6 ,在全生育期干物质积累速率快 ,干物质积累总量大 ,产量高。随着密度的增大株高增加 ,主要是由于主茎第 4～ 9节间伸长的结果 。The experiment of 6 density populations of soybean was conducted in the low fertility sandy soil , the results showed: the LAI changed stably during the flowering, podding, and filling stage in 52.5×10 4 plants/ha density condition with a value of 5.0,6.2,3.6 respectively, and it was higher than that of other density, its'dry matter accumulation was also quicker during all developing stage. So its'yield was higher than other treatments. The plant height was increased with its' population density increasing, and this was mainly due to the 4～9 internodes elongation; the ratio of grain/stem was dropped with its' population density increasing.

关 键 词：大豆 密度 干物重 LAI 

分 类 号：S565.101[农业科学—作物学]