稻纵卷叶螟Cnaphalocrocis medinalis Guenee是我国稻区的主要害虫。发生猖獗时稻叶被吃白。过去对该虫多使用药剂防治,但由于成虫迁入峰次多,成虫发生期长,发生预测和防治难于掌握,导致大面积多次用药,造成既不经挤又污染谷物和环境,更因杀死天敌引起水稻后期虫害严重发生。因此,采用抗虫品种已引起国内外各有关方面的重视。为了寻找抗源亲本供育种利用,我们于1979年开始由本院品种资源研究室提供广西稻种资源2320份和从国 Cnaphalocrocis medinalis Guenee is the main pest of rice in China. When rampant rice leaves are eaten white. In the past, more insecticides were used to control the insects. However, due to the large number of migratory adults and the long period of adult worms, it is difficult to predict the occurrence and prevention of such insects. As a result, multiple doses of pesticides on a large area are caused, resulting in neither crowding nor contamination of cereals and the environment, Kill natural predators cause pests in late rice serious occurrence. Therefore, the use of insect-resistant varieties has attracted the attention of all relevant parties at home and abroad. In order to find the source of resistance for breeding use, we began in 1979 by the Institute of species resources to provide rice resources in Guangxi 2320 and from the country