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依据1975～1981年衡阳市的气象资料和春大豆亩产量资料,首先用正交多项式回归方法估计了趋势产量,然后用费希尔积分回归模式和逐步回归方法计算出了该市气候因子和离趋势产量间的积分回归公式。这样,就选出了影响春大豆产量的主要气候因子,同时求出了它们对春大豆产量的影响系数。研究表明春大豆产量显著地受每旬平均温度,旬平均最高温度,旬平均日照时数和旬平均最低温度的影响。在春大豆生育中期这些气候因子比较适合,但在春大豆生育早期和晚期则不太适合。为了利用春大豆生育期间气候因子的有利影响和克服不利影响,进一步发展春大豆生产提出了一些相应的措施。并对两种种植制度作了讨论。事实证明,春大豆杂交晚稻种植制度优于早稻秋大豆种植制度。
According to the meteorological data of Hengyang City from 1975 to 1981 and the yield per mu of spring soybean, we first estimate the trend yield by orthogonal polynomial regression method, and then use Fisher integral regression model and stepwise regression method to calculate the climatic factors Integral regression formula between trend output. In this way, we selected the main climatic factors that affect the yield of spring soybeans and determined their effect on the yield of spring soybeans. Studies have shown that the yield of spring soybean is significantly affected by the average temperature per ten days, the average maximum temperature of ten days, the average sunshine hours of ten days and the average minimum temperature of ten days. These climatic factors are more suitable in the middle stage of spring soybean production, but not suitable for the early and late spring soybean growing stages. In order to take advantage of the climatic factors during the growth of spring soybean and to overcome the adverse effects, some measures are put forward to further develop the production of spring soybean. The two planting systems were discussed. Facts have proved that the spring soybean hybrid late rice planting system is better than the early rice autumn soybean planting system.