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广德县位于安徽省东南边缘,全县四周环山,1986年前,中华稻蝗在我县多属零星发生,1987年有4000亩水稻和少量旱地受害,1988年增至8.3万亩,平均每丛一头以上的面积为1.1万亩,最多虫量1亩达6万头。中华稻蝗在我县一年发生一代,以卵越冬,越冬场所主要是田埂、山边、荒地及种植的田中。初孵蝗蝻,首先在越冬地取食,逐渐转移到田边,麦田看麦娘里和有草的早地中,5月28日中稻秧田有蝻。6月5日二、三龄蝻大量转移到早稻田和收割的小麦田中,密度每平方米
Guangde County is located on the southeastern edge of Anhui Province. The county is surrounded by mountains. Before 1986, Chinense locust occurred in many sporadic occurrences in our county. In 1987, 4,000 mu of paddy and a small amount of dry land were harmed, increasing to 83,000 mu in 1988 with an average of Each plexus more than an area of 1.1 hectares, up to 1 mu amount of pests reached 60,000. Chinensis locust occurs in our county a year, overwintering eggs, wintering places are mainly fields, hillsides, wasteland and planted Tanaka. The first hatchling 蝻, first in the winter to feed, and gradually transferred to the Tanabe, Mai Niangli and grassland in the morning to see, May 28 in rice seedling with 蝻. June 5 Second, a large number of third-instar 蝻 transferred to the early rice fields and wheat harvest, the density per square meter