【摘要】 根据甘肃省夏粮主产县产量资料 ,计算出各县夏粮气候产量序列后 ,使用R型和Q型因子分析方法 ,分析甘肃省夏粮气候产量在区域分布及时间趋势上的变化特征。更多还原

【Abstract】 Based on the yield data of summer crops of the counties in Gansu province, the variation features of the climatic yield of summer crops in spatial and temporal distribution have been analyzed by using R and Q type factorial analysis after calculating the series of the climatic yield of summer crops of the counties.更多还原