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我县棉花害虫发生极为普遍,特别是进入七十年代以来,棉蚜、红令虫、红蜘蛛、棉令虫等害虫,连年暴发成灾,损失产量极为惊人,一般年分因虫害减产常在20%左右,少数特重年分如71年和76年损失产量竞高达40—50%。为了防治棉花害虫,确保棉花丰产丰收,自78年开始,我们在棉船公社江心大队的6000亩棉地上,开展了棉花害虫综合防治方法的研究和应用,本着“予防为主,综合防治”的植保方针,从总结过去经验教训着手,根据害虫发生为害规律,制订防治措施,并在实践中不断总结提高。三年
Since the seventies, cotton pests such as cotton aphids, red worms, spider mites and cotton bud worms have been causing serious losses in successive years. The loss of yield is extremely alarming. About 20%, a few special heavy annual output such as 71 years and 76 years loss of production competition up to 40-50%. In order to prevent and control cotton pests and ensure a good harvest of cotton, we started the research and application of comprehensive cotton pest control methods on the 6,000-mu cotton land in the Jiangxin Brigade of the Cotton Boathouse since 1978. Based on the principle of “Preventing and Preventing, Comprehensive Prevention and Control ”The policy of plant protection starts with summing up past experiences and lessons and formulates prevention and control measures according to the law of pest damage and continuously summarizes and improves in practice. Three years