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对73个生育期相近产量水平不同的南方大豆品种研究结果说明,籽粒产量与生物量及收获指数正相关,尤以后者更密切。鼓粒期茎叶比与收获指数显著相关,因而也与籽粒产量显著相关。初花期、结荚期等干物重与生物量显著相关,因而也与产量显著相关。作物生长率反映干物质积累的速度,与生物量及籽粒产量显著相关。叶质重、生殖生长期/营养生长期比值因分别与净同化率及收获指数相关而与产量显著相关。
The results of 73 southern soybean varieties with similar yield levels during the whole growth period showed that grain yield was positively correlated with biomass and harvest index, especially the latter. The stem-leaf ratio at drum grain stage was significantly correlated with harvest index, and was also significantly correlated with grain yield. Dry matter weight at initial flowering stage and podding stage was significantly correlated with biomass, which was also significantly correlated with yield. Crop growth rate reflects the rate of dry matter accumulation, which is significantly related to biomass and grain yield. Leaf weight, reproductive growth / vegetative growth rate were significantly correlated with yield due to net assimilation rate and harvest index, respectively.