论文部分内容阅读
稻纵卷叶螟是永康市水稻主要害虫之一，其初次虫源主要以南方虫源在梅雨季节迁入该市， 以后本地蛾与再迁入蛾源一起为害。对该市危害损失较大的主要是６月上、中旬的三（１ ）代和８月底至９月初的六（４）代纵卷叶螟。随着种植业结构调整和水稻品种更新，早稻 面积锐减，单季
The rice leaf roller is one of the main rice pests in Yongkang City. The primary insect pests mainly migrate to the city in the rainy season in the southern part of the province. Afterwards, the local moths are associated with the migratory moths. The most damaging to the city are three (1) generations in mid-to-in June and six (4) generations of leaf-roll in late August to early September. With the restructuring of planting industry and the updating of rice varieties, the area of early rice has dropped sharply in single season