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本文提出了“大豆暗期饱和值”的概念。并据此将大豆的光温反应分为两个阶段。在不同的阶段,大豆从出苗至开花日数的变化分别由不同的主要因素决定。通过对15个大豆品种在16个地点的试验资料分析,验证了暗饱和值的实际意义。依暗期饱和值为依据,计算出了各个品种的光温反应回归方程和其中两个大豆品种出苗至开花日数与整个生育期的回归方程。因此,知道了这些品种的暗期饱和值后,即可应用各自的回归方程推算出它们由原产地引种到任一地区种值时的出苗至开花日数和全生育日数。
In this paper, the concept of “dark period of soybean” is proposed. According to the light and temperature response of soybean is divided into two stages. At different stages, the changes in soybean days from emergence to flowering are determined by different major factors. By analyzing the experimental data of 15 soybean varieties in 16 locations, the practical significance of dark saturation was verified. Based on the dark-period saturation values, the regression equation of light-temperature response of each species and the regression equation of two soybean varieties from emergence to flowering days and the whole growth period were calculated. Therefore, knowing the dark-season saturation of these species, we can deduce their number of emergence and flowering days and the number of full-days of breeding when applying them to any region by their respective regression equations.