中国小麦生产的时空变异及区域优势分析

Space-time variance and Zoning Advantage Analysis of China wheat

关键词:  小麦生产 变异系数 生态区 区域优势

Key words:  stability  zoology region  zoning advantage

摘要:

通过对1979～2002年小麦在中国粮食生产的产量和播种面积所占百分比的动态分析，论述了中国小麦在粮食生产中具有相对稳定的地位，而相对于其它粮食作物而言，小麦生产又具有较大的波动性的特征。对比分析五大气候生态区小麦单产、总产和播种面积，认为中国小麦生产具有空间上的相对稳定性和时间上的相对不稳定性，小麦生产的这种时空差异性造成了区域比较优势的时空变化。北方冬麦区和春麦区是发展小麦生产的重点地区。

Abstract:

Based on the analysis of percent of sowing area and gross yield of wheat compared china food crops from 1979 to 2002, indicated there is steady percent of sowing area and yield for wheat to compare with the food crops, but there is a bigger fluctuation for wheat to compare with other food crop. Based on the analysis of Wheat yield per hectare, gross yield and sowing area of five climate zoology regions, wheat production is steady in space and not steady in time relatively, the space- time otherness bring the space- time change of zoning advantage. On the basis of region climate condition and zoning advantage index, we think the north winter wheat region and spring wheat region are important regions to develop china wheat production.