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于1962—1964年,在6个点进行大豆品种生态试验。大豆品种生育期从南到北有明显延长的趋势,不同成熟期品种略有差异,极早熟品种对光温生态条件不敏感。在温度、光照等外界条件能满足其生长要求时,在不同地区的生育日数不依地区的积温和纬度而转移。早熟品种较为敏感。各试验点历年平均积温对早熟品种生育期高度负相关。中熟及中晚熟品种只能在本省中部及中南部地区达正常成熟,在熟期方面有明显的界线。 各试验点生育期间(5—9月)的月平均气温,对早熟品种生育期变化呈高度负相关。从南到北生育期间月平均气温每减低1℃,大豆生育期延长4.05天。
In 1962-1964, the ecological test of soybean varieties was carried out at 6 points. Soybean varieties have a significantly longer growing period from south to north, with slightly different varieties at different mature stages. Very early varieties are not sensitive to the light and warm ecological conditions. In the temperature, light and other external conditions to meet their growth requirements, the number of birth days in different regions do not depend on regional temperature and latitude and the transfer. Precocious varieties are more sensitive. The average accumulated temperature of each test point over the years had a highly negative correlation with the maturity of early maturing varieties. Medium and late maturing varieties can only reach normal maturity in the central and southern central regions of the province, with clear boundaries in maturity. The monthly average temperature during the growth period of each experimental point (May-September) was highly negatively correlated with the growth of early maturing varieties. Every 1 ° C reduction in monthly average temperature during the period from south to north, the growth period of soybean is extended by 4.05 days.