稻飞虱和稻叶蝉是冀南麦茬稻区毁灭性害虫。1991年,磁县近4万亩麦茬稻因受两种害虫为害,当年水稻平均亩产较1990减产33.25％,并造成近百亩地绝收。总结其教训主要是人们对两种害虫的发生规律认识不清和防治时机不当。本文将介绍这两种害虫的发生规律和防治方法。一、发生规律冀南麦茬稻区,飞虱类害虫以灰飞虱为主,而叶蝉类以黑尾叶蝉为主。灰飞虱一年发生4—5代,世代重叠明显,以若虫在田边草丛、稻根丛或落叶下过冬,越冬若虫于4月中旬—5月中旬羽化,迁向迟嫩麦田产卵繁殖,第一代若虫于5月中旬—6月上旬大量孵化,于5月下旬—6月中旬羽化,迁入水稻秧田和早栽大田以 Planthopper and rice leafhopper are the devastating pests of wheat stubble rice in southern Hebei. In 1991, about 4 million mu of wheat stubble rice in Cixian County was harmed by two kinds of pests. In that year, the average yield per mu of rice was 33.25% less than that of 1990, resulting in nearly 100 mu of total yield. Summarize the lesson is that people are not clear understanding of the occurrence of the two pests and the timing of prevention and treatment is not appropriate. This article will introduce the occurrence of these two pests and control methods. First, the occurrence of law Hebei rice stubble area, planthopper-based Laodelphax striatelles, and leafhoppers dominated by black-tailed leafhopper. Laodelphax striatellus occurred 4-5 generations a year, the generations overlap obviously with nymphs in the edge of grass, rice roots or deciduous wintering, overwintering nymphs in mid-April to mid-May emergence, moved to late tender spawning wheat , The first generation of nymphs in mid-May - a large number of early hatch in early June, in late May - mid-June emergence, moved into rice seedling field and early planting