不同栽培密度下大豆生长发育动态研究

目的]研究宁夏引黄灌区不同密度栽培下大豆生育动态,确定综合性状表现合理的栽培密度。方法]通过田间测定和实验室考种对宁夏引黄灌区不同密度下大豆生育动态进行研究。结果]宁夏引黄灌区大豆株高随密度的增大而增高;干物质积累量随密度增大而增加;单株叶、茎干重随密度的增大而降低;不同密度下叶面积指数不同,最大叶面积指数随着密度的增大而增大。在宁夏引黄灌区,综合性状表现较合理的大豆种植密度为行距0.50 m,株距0.10 m。结论]研究结果为宁夏大豆高产栽培提供了理论依据。

Research on Soybean Growth and Development Dynamic under Different Planting Density

Objective]The object was to study the soybean growth and development dynamic under different planting density in the Yellow River irrigated area in Ningxia so as to confirm the planting density under which the comprehensive character of the soybean showed reasonable.Method]The soybean growth and development dynamic under different planting density in the Yellow River irrigated area in Ningxia were stuied through the field determination and laboratory seed-checking. Result]The plant height and the dry material accumulate of the soybean in the Yellow River irrigated area in Ningxia were increased with the increment of the planting density,while the leaf weight per plant and stem weight per plant were reduced with the increment of he planting density. The leaf area index differed under different planting density and the maximum leaf area index was enhanced with the increment of the planting density. In the Yellow River irrigated area in Ningxia,the planting density under which the comprehensive character of the soybean showed reasonable was 0. 50 m in the row space and 0. 10 m in the plant space. Conclusion] The study provided the theoretical basis for the high-yiel cutivation of the soybean in the Ningxia.