棉花早枯是在江苏沿海及里下河地区经常发生的现象,近两年有不断加重的趋势,2002、2003年发生尤其严重,建湖县棉田早枯面积约为30％,一般发病田块产量损失5％-20％,最严重田块产量损失3成以上。 Cotton early blight is a common phenomenon in the coastal areas and Lixiahe areas of Jiangsu Province. It has been increasing in recent two years, especially in 2002 and 2003. The area of ​​morning blight in cotton fields in Jianhu County is about 30% Production loss of 5% -20%, the most serious loss of field production of more than 3 percent.