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抗虫育种是以选育抗虫新品种为主要目标的育种方法。抗虫育种经济有效,不污染环境,也便于大面积应用推广,是综合防治害虫保证作物高产、稳产的主要手段。美国早在40年代就开始进行作物抗虫性研究,並取得重大成就。日本、墨西哥、印度、菲律宾等国也取得了很大进展,抗虫品种的种植面积迅速扩大,显著减少了害虫危害的潜力。我国抗虫育种工作虽取得了一些成绩,但还没有广泛推广应用。如我国玉米每年因虫害损失产量达100亿斤左右,棉花减产20％左右。因此,开展抗虫育种以最小投资,获得最大经济效益。抗虫育种的方法主要有以下三种:
Insect breeding is a breeding method based on breeding new insect-resistant varieties. Insect-resistant breeding is economical and effective, does not pollute the environment, but also facilitates the popularization and application of large area. It is the main means of comprehensively preventing and controlling pests and ensuring the high yield and stable yield of crops. As early as the 1940s, the United States started research on crop pest resistance and made significant achievements. Great progress has also been made in Japan, Mexico, India, the Philippines and other countries. The planting area of insect-resistant species has rapidly expanded and the potential for pest damage has been significantly reduced. Although China has made some achievements in insect breeding, it has not been widely applied. Such as China’s annual loss of corn production due to pests of 100 billion kilograms, about 20% reduction in cotton. Therefore, to carry out insect breeding with minimum investment, get the most economic benefits. Insect breeding methods mainly in the following three: