大豆密植不同种植方式比较研究

Comparison of Closeplanting Ways of Soybean

本文对大豆密植五种种植方式的生育性状及产量进行比较分析，结果表明：相同密度（４４万株／ｈｍ２）下，宽台密植的三处理比其它处理明显的增加叶面积指数和干物质积累，改善大豆冠层中、下部的透光性能，提高大豆产量。宽台窄行密植比其它处理最大叶面积指数增加５．８％～２３．１％，干物重增加３．７％～２０．３％，光照强度增加７．１％～２４．４％，产量提高２６．２％～４２．２％。宽台密植可在三江平原大面积推广应用。

The yields and growth characters of 5 closeplanting ways of soybean were compared and analysed in the paper. The result showed that under the same density (440 thousand plants/ha), the LAI and dry matter weight in three treatments of close planting on broad platform were higher than the other two treatments, the perviousness to light in the middle and low crown was improved and the yield was increased. Compared with other treatments, the biggest LAI of close planting on broad platform iucreased by 5.8￣23.1%,the dry matter weight increased 3.7￣20.3%, the intensity of illumination increased 7.1￣24.4% and the yield increased 26.2￣42.2%.