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以1984,1987年的试验资料,分析积温、累计日照时数、累计降雨量和日平均温度对春大豆产量的效应.结果表明:春大豆产量及主要经济性状受气象因素的影响较大.生育期,尤其是生育前期(出苗至第一朵花)受积温的影响最大.各生育阶段影响产量的主导气象因素是不同的.结荚期主导因素是日平均温度,鼓粒期是雨量,成熟期是日照.当结荚期处于日平均温度21℃左右,鼓粒期累计降雨量155ml,成熟期的累计日照时数在153h 以上时的产量最高.
The effects of accumulated temperature, accumulated sunshine duration, cumulative rainfall and daily average temperature on the yield of spring soybean were analyzed based on the experimental data of 1984 and 1987. The results showed that the yield and main economic traits of spring soybean were greatly influenced by the meteorological factors. The period, especially the first prenatal period (emergence to the first flower), was the most affected by accumulated temperature.The dominant meteorological factors influencing yield were different in each stage of growth.Dominant period of podding stage was daily average temperature, The period is sunshine.When the podding period is at a daily average temperature of about 21 ℃, the total amount of precipitation during the drumming period is 155ml, and the highest sunshine duration is reached when the cumulative sunshine duration at maturity is above 153h.