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旱地小麦产量年际变率取决于相应降水量的变率。为探讨旱作小麦产量与降水量及其时空分布的定量关系,本文依据定西县36年的资料,应用回归分析及建立微分方程的方法,获得两个平行的数学模型。初步弄清了旱作小麦产量与五、七月降水量,特别是五月降水的高度相关性,并提出了增加旱作粮食产量的初步设想。
The interannual variability of dryland wheat yield depends on the variability of the corresponding precipitation. In order to explore the quantitative relationship between the yield and precipitation of dryland wheat and its spatial and temporal distribution, based on the data of 36 years in Dingxi County, two parallel mathematical models were obtained by regression analysis and the establishment of differential equations. The preliminary correlation between the yield of wheat in dry land and the precipitation in May and July, especially the precipitation in May, was initially clarified and the tentative plan for increasing the output of dry land for grain was put forward.