山西省小麦生态区划研究

本文选择地理纬度、海拔高度、年平均气温和1月份平均气温4项指标,根据山西省62个气象站20年资料,采用二元回归、相关分析的数学方法,通过DPS数据处理系统运算,建立地理纬度、海拔高度与年平均气温及地理纬度、海拔高度与1月份平均气温的二元回归方程,将山西省小麦区划分为春麦区、强冬麦区、冬麦区、弱冬麦区4个大区。根据4大麦区在各行政区内的分布,将山西省小麦区划分为8个类型:北部春麦区,春麦、强冬麦兼种区,春麦、强冬麦、冬麦兼种区,春麦、强冬麦、冬麦、弱冬麦兼种区,强冬麦区,强冬麦、冬麦兼种区,强冬麦、冬麦、弱冬麦兼种区,冬麦、弱冬麦兼种区。本研究对山西省小麦育种、引种、栽培具有指导意义。

Ecological regionalization of wheat cultivation in Shanxi Province of China

Using 20-year climatic data from 62 weather stations in Shanxi Province, regression equations were established for annual temperature with latitude and elevation as the explaining variables, and then for January average temperature with latitude and elevation as the explaining variables via binary regression and correlation analysis in Data Processing System (DPS). Based on the regression equations, four main ecological regions were obtained for wheat cultivation in Shanxi Province. The eco-regions are: spring wheat (S) region, strong winter wheat (SW) region, winter wheat (W) region and weak winter wheat (WW) region. Then by factoring spatial overlaps of the different wheat regions, eight sub-ecological regions were identified for wheat cultivation. These are: northern areas of S; mixture areas of S and SW; mixture areas of S, SW and W; mixture areas of S, SW, W and WW; areas of SW; mixture areas of SW and W; mixture areas of SW, W and WW; and mixture areas of W and WW. The result of the study is vital for wheat breeding, new variety introduction and cultivation in Shanxi province.