豇豆早枯是长江流域经常发生的现象,近2年有加重的趋势。2003年如皋市豇豆早枯病发生面积达种植面积的30%,产量损失10%～20%,最严重的田块超过50%。2003年春,地刀豆、架刀豆也普遍发病,重发面积达到80%,毁田面积10%。1发生特点早枯发生在豇豆旺盛生长的中期,一般在7月上旬、8月 Early dry cowpea is a common phenomenon in the Yangtze River Basin, the past two years have aggravating trend. Rugao cowpea occurred in 2003, the area of ​​up to 30% of acreage planted area, yield loss of 10% to 20%, the most serious field more than 50%. In the spring of 2003, ground beans, shelled beans are also common disease, re-issued area of ​​80%, destroyed the area of ​​10%. 1 occurs early withered cowpea vigorous growth in the mid-term, usually in early July, August