近年来,石首市在进行棉花病虫害防治时,由于用药不当常发生药害。2001年以来棉花药害面积约700 hm2,因药害造成棉花经济损失约420万元,并呈上升趋势,2004年棉花药害面积230 hm2,经济损失138万元;2005年棉花药害面积达333 hm2,预计经济损失在200万元以上。为此抓好棉花安全用药, In recent years, Shishou City, pest control in the cotton, due to improper use of drugs often occur phytotoxicity. Since 2001, the area of ​​medicinal damage of cotton is about 700 hm2, the economic loss of cotton due to phytotoxicity is about 4.2 million yuan, showing an upward trend. In 2004, the area of ​​medicinal damage of cotton was 230 hm2 and the economic loss was 1.38 million yuan. In 2005, 333 hm2, the estimated economic loss is more than 2 million yuan. Do a good job of cotton safe medication,