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大豆顶节位叶面积与籽粒重之间的相关系数r=0.6741;单株各节位叶面积与籽粒重之间的相关系数为0.964、0.744、0.674(因品种而异);用剪叶处理使叶面积减少一半,单株籽粒重相应地下降47—60％。大豆群体上、中、下层分层剪叶,单株籽粒重下降4.3～21.2％不等(因品种和去叶层次而异)。粒叶比(g/m~2)与大豆单位面积产量呈显著正相关(r为0.49、0.45不等,因年份而异)。
The correlation coefficient between the top leaf area and the grain weight of soybean was r = 0.6741. The correlation coefficient between the leaf area per plant and the grain weight was 0.964, 0.744 and 0.674 (depending on the variety) Reduce the leaf area by half, and decrease the grain weight per plant by 47-60% accordingly. Soybean populations, middle and lower stratified cut leaves, single grain weight decreased 4.3 ~ 21.2% range (due to the variety and leaf level varies). The grain-leaf ratio (g / m ~ 2) had a significant positive correlation with soybean yield per unit area (r = 0.49,0.45, depending on the year).