近年来,随着双季稻面积扩大和晚稻种植增加,三化螟的发生为害普遍增重。有的地区,因三化螟危害,第二季稻严重减产,甚至失收。这是双季稻面积继续扩大的严重障碍,也是水稻改制必须研究的课题之一。根据我们在车江坝子调查结果认为,改制对稻螟发生为害的影响极大,且有一定规律。只要掌握其规律,正确制定防治策略,螟害问题是可以解决的。 In recent years, with the double cropping rice area and late rice planting increased, the occurrence of the yellow rice borer generally increase weight. In some areas, due to the damage of the three stem borers, the output of the second season rice is seriously reduced or even lost. This is a serious obstacle to the continuous expansion of double cropping rice and one of the topics that must be studied in rice restructuring. According to our survey results in Chejiangjiangzi, the impact of restructuring on the occurrence of rice stem borers is extremely great and there are certain rules. As long as they grasp the law, the correct formulation of prevention and control strategies, stem borer problem can be solved.