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芒果扁喙叶蝉(Idioscopus incertus(Baker)是广西右江河谷地区芒果的主要害虫之一。近年来随着芒果种植业的发展,此虫的为害日趋严重。据1986年3月对田东、田阳、百色3县(市)23个果园总面积为179.6亩的抽样调查,受害面积148.5亩,占调查面积的82.68%,其中因受害严重导致完全失收的23亩,占12.8%。为此,我们于1986—1987年,对芒果扁喙叶蝉进行了观察和防治试验。现将结果整理如下: 一.发生及其习性观察 (一).发生世代及其周年消长动态 据1986—1987年两年的室内饲养观察,
Idioscopus incertus (Baker) is one of the main pests of mango in the Youjiang Valley of Guangxi.Due to the development of mango planting in recent years, the damage of this pest is more and more serious.According to March 1986, Tian Yang and Baise 3 counties (cities), the total area of the orchards is 179.6 mu. The affected area is 148.5 mu, accounting for 82.68% of the surveyed area, of which 23 mu (12.8%) are totally lost due to serious damage. , We carried out the observation and prevention and cure of the mango flat-billed leafhopper from 1986 to 1987. The results are summarized as follows: I. Occurrence and its habit observation (A). Generations and their annual growth dynamics According to 1986-1987 Two years of indoor feeding observation,