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１９９３～１９９７ 年， 在江苏省常熟市徐市镇棉花落叶型黄萎病地（致病小种为落叶型ＪＣ５），对苏棉８ 号从６ 月初至９ 月中旬进行棉花黄萎病调查， 并结合当地的气温、雨日等气象因子对黄萎病的发生消长关系进行统计分析。结果表明， 平均气温２３℃最适宜发病， 平均气温大于２８℃时发病停止（隐症）。黄萎病的日增病指与平均气温、雨日相关性较强， 与雨量相关性较差。合并５ 年的资料， 通过多因子筛选， 得出日增病指（Ｙ）与雨日（Ｘ２）、大于２３℃的有效积温值（Ｘ１）的关系式： Ｙ＝ － ０．１４９４９Ｘ１＋ ０．１４５４４Ｘ２＋ ０．９３５５１。
In 1993-1997, the study was conducted on cotton leaf-wilt type Verticillium dahliae in Xu town, Changshu city, Jiangsu province (JC5, the diseased races) and Verticillium dahliae on the cotton from the first to the middle of September, Combined with the local weather, rainy days and other meteorological factors on the occurrence and growth of Verticillium wilt statistical analysis. The results showed that the average temperature of 23 ℃ the most appropriate onset, the average temperature is greater than 28 ℃ onset of disease stop (hidden disease). Verticillium wilt disease refers to the mean temperature, the correlation between the rain day is strong, and the correlation between rainfall is poor. The data of five years were combined to obtain the relationship between the effective accumulated temperature (X1) of increasing disease index (Y) and rainy day (X2) and greater than 23 ℃ through multifactorial screening: Y = - 0.14949X1 + 0.14544X2 + 0.93551.