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本文根据1976～1980年试验资料,论述了大豆亩产400斤左右的产量结构与产量关系。当大豆亩产超过400斤时,产量因子间是个互相制约的关系,虽平方米结荚数愈多对提高单产有良好作用,但粒荚比低、百粒重小,也会直接影响产量。百粒重为24克,亩产却达454斤。大豆亩产400斤的叶面积指数变化规律,出现的高峰是在鼓粒初期,而且以5～6较为适宜,并且上升与下降陡度较小,可延长叶子工作时间,有利光合产物积累。通过研究表明:光合速率高的品种,都相对提高了大豆产量。同时,对大豆合理群体结构、壮苗与产量关系等,进行了讨论。并初步明确了大豆高产的关键技术措施。
Based on the experimental data from 1976 to 1980, this paper discusses the relationship between yield structure and yield of about 400 kg of soybean per mu. When the soybean yield exceeds 400 kg, the yield factor is a mutual restraint relationship. Although the more pods per square meter has a good effect on increasing yields, the lower pod ratio and the smaller kernel weight will directly affect the yield. One hundred grain weight is 24 grams, but the yield has reached 454 pounds. Soybean yield 400 pounds per acre leaf area index changes, the peak appears in the initial drum, and to 5 to 6 more appropriate, and the steep rise and fall less, can extend leaf work time, favorable accumulation of photosynthetic products. Through the research shows that: high photosynthetic rate varieties, all relatively increase soybean yield. At the same time, the reasonable population structure of soybean, seedling and yield relationship, were discussed. And initially identified the key technical measures of high yield of soybean.