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在不同种植方式和种植密度下,测定了长花序短果枝株型品种沈农6号的生理生态参数,结果表明,其最大叶面积指数出现在出苗后77d左右。在60cm和30cm两种行距种植方式下,随着种植密度的增加,最大叶面积指数均会增大,但增大的幅度不一样。在3种种植密度下,60cm行距种植的大豆群体,鼓粒期叶片衰减速率均比30cm行距的小。不同种植方式和种植密度下,叶片生产效率有明显的差异,每生产1kg籽粒需叶面积13.32～27.08m2。随着种植密度的增加,会导致叶片衰老加快,生产效率降低。60cm种植方式下,无论是何种种植密度形成的群体,群体内的温度均较高。30cm行距条件下,群体叶面积较大,荫蔽较好,因此无论何种种植密度形成的群体,其湿度变化幅度较小。在10:00～14:00,60cm行距种植条件下,各种密度形成的群体其湿度均较大。
Physiological and ecological parameters of Shennong 6, a long-leaved plantlet type, were determined under different planting patterns and planting densities. The results showed that the maximum leaf area index appeared at 77 days after emergence. Under both 60 cm and 30 cm row spacing planting methods, with the increase of planting density, the maximum leaf area index will increase, but the range of increase is not the same. At the three planting densities, the decay rate of leaf at the boll stage was smaller than that of the 30 cm row at the 60 cm row spacing. Under different planting methods and planting densities, there was a significant difference in leaf production efficiency, and the required leaf area per 1kg grain was 13.32 ~ 27.08m2. As planting density increases, leaf senescence will be accelerated and production efficiency will be reduced. Under the 60 cm planting mode, no matter what kind of planting density is formed, the temperature in the group is higher. Under the conditions of 30cm row spacing, the leaf area of the population is larger and the shading is better. Therefore, no matter what kind of planting density is formed, the variation range of humidity is small. In 10: 00 ~ 14: 00, 60cm row spacing planting conditions, the density of the formation of groups of their humidity are large.