冬季是水稻害虫的休眠和“蛰伏”阶段,不活动或活动性小,抓住这个有利时节破坏其休眠场所,消灭越冬虫卵,是控制来年虫源、降低虫口密度、减轻对水稻危害的一项事半功倍的有效措施,须重视和加强防治。水稻主要害虫越冬的虫态及场所是:二化螟,以幼虫在稻桩、稻草、茭白、三棱草中越冬;三化螟,以幼虫和蛹在稻桩内越冬;稻苞虫,以幼虫在背风向阳的田边、水沟边、河边等处的游草、柳叶蓑草中结茧越冬;稻蓟马,以成虫在田边、沟边的禾本科杂草上越冬;稻叶蝉,以若虫和成虫在田 Winter is the pest dormancy and “dormant ” phase of the rice pests, inactivity or activity is small, seize this favorable season to destroy their dormant places, destroy the winter eggs, is to control the coming year insect source, reduce population density, reduce the damage to rice We must attach importance to and strengthen prevention and control. The main insect pests overwintering in rice and locusts are: Chilo suppressalis, the larvae in the rice piles, straw, Sui white, Scripus wintering; Borer, with larvae and pupae in the pile of rice in the winter; Larvae in the leeward sunny Tanabe, gutter, river and other places of grass, willow cocoon cocoon overwintering; rice thrips to adults in the Tanabe, Gou edge of the grass weeds overwintering; Paddy Leafhoppers to nymphs and adults in the field