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近几年来,由于果园管理粗放,梨蝽象已成为西山几县梨树主要害虫之一。据调查,我县152个果园,60％受到梨蝽象的为害,受害梨树达10万多株,年损失果品在7万斤以上。为解决这一问题,县科委及蚕果局于1982—1983年在梨蝽象发生严重并能代表离石梨产区气候特点的李家沟果园,对梨蝽象进行了生活史观察及防治试验。一、形态特征
In recent years, pear orchard has become one of the major pests of pear trees in several counties of Xishan due to the extensive orchard management. According to the survey, 60% of 152 orchards in our county were victimized by pear stinkbugs, more than 100,000 were infected with pear trees, and the annual loss of fruit products was over 70,000 kg. In order to solve this problem, the county Science and Technology Commission and the Bureau of Sericulture and Fruit Bureau conducted a survey on life history of Pear Stag Bug in Lijiagou Orchard in 1982-1983 where pest was serious and could represent the climatic characteristics of Lishi Pear. Control test. First, the morphological characteristics