棉花红铃虫是我省棉区的主要害虫,采用常规喷雾法防治初孵幼虫,常年损失仍达10％左右,大发生年则要损失20—30％。为改进红铃虫的防治方法,我们曾分设喷雾(25％二二三乳剂200倍液)、喷粉(6％六六六粉加混草木灰)、敌敌畏毒土熏蒸(80％敌敌畏1斤加细土50斤)和不施药四个处理进行对比试验。结果表明,采用敌敌畏毒土熏蒸,可有效地把红铃虫消灭在产卵 Red bollworm cotton bollworm is the main pest in the cotton area of ​​our province. The routine spraying method is used to control the newly hatched larvae. The perennial loss is still about 10%, while the annual occurrence of the bollworm is 20-30%. In order to improve the method of prevention and cure of the red bellworm, we have divided the spray (25% two hundred twenty-three emulsion 200 times), dusting (6% six six six powder plus ash), dichlorvos toxic soil fumigation (80% dichlorvos 1 kg plus Fine soil 50 pounds) and no application of four treatments for comparative tests. The results showed that the use of dichlorvos toxic soil fumigation, can effectively eliminate the pink bollworm lay eggs