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以不同生态类型品种(不同熟期、不同结荚习性)为材料,观察、测定、分析了大豆的出苗～开花～结荚～成熟,各生育阶段的特点,根、茎、叶、花、荚、籽粒的形态发育规律,以及叶片光合作用生理等。通过研究看出: 1.物候期:早热种的物候期比较集中,晚熟种的物候期不集中 81年比80年提早播种15天,早出苗6天。早熟种由于早播,各物候期均稍有提前。晚熟种除出苗期外,各物候期均没有提前。既早播不提早成熟。可以认为晚熟种比早熟种对光、温反应较为敏感。
The characteristics of germination, flowering, podding and maturity of soybean and the characteristics of each growth stage were observed, determined and analyzed with different ecotypes (different maturity and different pod habit). The characteristics of root, stem, leaf, flower and pod , The rules of grain morphology, and photosynthesis physiology of leaves. Through the study, we can see: 1.Physiological period: the early phenophase is more phenotypic. The late phenophase is not concentrated in 81 years than in 80 years, sowing early 15 days, early emergence of 6 days. Early maturity due to early sowing, the phenophase were slightly advanced. Late maturing except seedling stage, the phenology are not early. Not early maturity early broadcast. It can be considered that late-maturing species are more sensitive to light and temperature than the precocious species.