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以高蛋白大豆冀豆12为材料研究了株高、叶面积指数、干物质积累分配及产量对种植密度的响应。结果表明:随密度的增加,株高和最大叶面积指数呈上升趋势,单株干物质积累量和各器官干物质积累量逐渐减小。群体干物质积累量随着生育进程表现为先增加后下降趋势,鼓粒期达到峰值,鼓粒期以后开始下降;群体干物质积累量随密度升高也呈先增加后下降的趋势,以密度22.5万株/hm~2处理最大。密度为22.5万株/hm~2时,群体产量3 736.67kg/hm~2,为最高。
The response of plant height, leaf area index, dry matter accumulation and distribution and yield to planting density was studied with high protein soybean JIU 12. The results showed that with the increase of density, the plant height and the maximum leaf area index showed an upward trend. The dry matter accumulation per plant and dry matter accumulation of all organs gradually decreased. The dry matter accumulation of the population showed the first increase and then the decrease with the growth process, the peak of the druming stage and the later decline of the drum stage. The dry matter accumulation of the population also increased at first and then decreased with the increase of the density, 225000 plants / hm ~ 2 deal with the largest. When the density was 225,000 plants / hm ~ 2, the population output was 3 736.67kg / hm ~ 2, which was the highest.