本文应用车贝雪夫多项式对东北三省大豆历年平均产量进行空间场分解,滤掉部分非气候因子的影响,取二项式的拟合值作为气候产量,分析与气候因子的关系,建立大豆各地平均产量与生长季≥10℃积温、张宝堃干燥指数(K=0.16 ∑T/R)及生长季7—8月平均温度关系的气候产量模式。在此基础上分析气候产量的空间分布特点,从而为大豆的合理布局提供气候依据。

In order to stress the relationship between the climatic conditions and the yield,the authors carried out the resolution of space field in average yearly yield of soybean of three provinces in northeast by means of Chebyshev polynomial;after filtering some effects of non-climatic factors,and taking the simulated value of binomial as the climatic yield,analyzed the relationship between the climatic yield and climatic factors.The mathematical model of the relationship between the annual soybean yield in various areas in northeast and the accumulated temperature (∑T≥10℃)in growing seasons,Zhang Baokun’s dry index (K=0.16T/R),mean monthly temperature in July and August.On the basis of this model,the climatic productivity target(A_i=Yi/Ymax)was calculated,and the distributed features in space were analyzed. That provides a basis for rational distribution of soybean.