免耕直播稻具有秸秆还田、保墒抗旱、节省劳力、保护土壤结构等优点,得到了较大面积的推广,替代了单一的移栽种植方式,随之水田生态条件发生了根本性的变化,导致稻象甲发生量回升与为害加重。1发生与为害习性概况 稻象甲在江苏一年发生一代,以幼虫为主在稻根附近或须根间作土中越冬。次年,越冬幼虫于5 The no-tillage direct-seeded rice has the advantages of straw returning, water conservation and drought resistance, labor-saving and soil structure protection. It has been popularized in a large area and replaces a single transplanting planting mode. As a result, the ecological conditions of paddy field have undergone fundamental changes, Lead to the occurrence of rice meal A rise and harm worse. 1 Occurrence and Harmfulness Habits Rice A occurs a year in Jiangsu, mainly larvae in the vicinity of rice roots or fibrous roots for the soil between the winter. The following year, overwintering larvae at 5