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选育棉花抗虫品种,充分利用作物本身的自卫反应能力,获得天然防虫、治虫效果,具有防效稳定、有利于生态平衡、应用方便、减少农药投资和农药污染等优点,它将成为棉花病虫害综合治理中一个不可忽视的环节。 选育和利用棉花抗虫品种的前提,是对大量棉花种质资源进行抗虫性鉴定和筛选,对棉花种质的抗性程度作出评价,以便直接在生产中利用丰产优质的抗虫品种和为培育抗虫品种提供抗源。 1981年以来,我们采用了以下方法进行棉花种质对棉铃虫(Heliothis armigera)的研究:棉花抗虫形态的观察鉴定、田间人工接
Breeding cotton insect-resistant varieties, make full use of crop self-defense response ability, access to natural pest control, pest control effect, with anti-efficiency and stability, is conducive to ecological balance, ease of use, reduce pesticide investment and pesticide contamination, etc., it will become cotton pests and diseases Comprehensive management of a link can not be ignored. Breeding and utilization of cotton insect-resistant varieties on the premise that a large number of cotton germplasm resources for insect resistance identification and screening, evaluation of the extent of resistance to cotton germplasm in order to directly use in the production of high yield and quality of insect-resistant varieties and To cultivate insect-resistant varieties to provide resistance. Since 1981, we have used the following methods to study cotton germplasm on Heliothis armigera: observation and identification of cotton insect-resistant morphology,