一、资料与方法我们采用1973～1984年黄河流域棉花区试中有一定推广面积的品种产量及纤维品质测试资料(包括纤维强度、长度、细度、成熟度),结合当年当地棉花生长季节气象资料,即5～11月各地日照、降水、平均气温、最低气温、气温日较差、湿润度等逐旬资料,进行统计分析。但考虑到各性状的量纲不同,特将资料作标准化处理: I. Data and Methods We used the test data (including the fiber strength, length, fineness and maturity) of the cultivated area and the fiber quality of a certain popularized area in the Yellow River valley trial in 1973 ~ 1984. Combining with the local cotton growing season meteorology Information, that is, from May to November all over the sunshine, precipitation, the average temperature, the lowest temperature, the temperature on the poor, wetting and other data at the end of Wan, statistical analysis. However, taking into account the different dimensions of the traits, especially the data for standardization: