水稻是重要的粮食作物,虫害是水稻生产的一大威胁,过去水稻害虫都用化学农药进行防治,这不仅成本高,污染严重,而且单纯依靠农药亦难以控制虫害。1962年以后,陆续发现一些优良的水稻抗虫抗源,利用这些抗源育成并推广了一批抗虫品种,这对减轻和控制虫害,确保稻谷丰收起了显著作用。从此,选育和利用抗虫品种受到许多产稻国家和地区的重视,都把抗虫性作为水稻的一项育种目标,研究越来越深入,进展亦较快。 Rice is an important food crop. Pest is a major threat to rice production. In the past, pests of rice were controlled by chemical pesticides. This is not only costly and polluting, but also pest control can not be controlled simply by pesticides. After 1962, some good insect resistance sources of rice have been found one after another, and a number of insect-resistant varieties have been bred and popularized by using these resistance sources. This has played a significant role in alleviating and controlling pests and ensuring the harvest of rice. Since then, the breeding and utilization of insect-resistant cultivars have received much attention from many rice-producing countries and regions, and regard insect resistance as a breeding target for rice. Research has progressed further and progressed rapidly.