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近年来,随着林业产业结构的调整,阜阳市(原阜阳市,下同)苹果发展面积较大。据统计到1995年,全市已栽植苹果树1.5万亩,品种主要是红富士、秦冠等优良品种,分布20多个乡镇。但由于病虫害日趋严重,致使树木生长势衰弱,结果期推迟,有的甚至造成树木死亡。 1993——1995年我们对阜阳市苹果的虫害进行调查发现,苹果树虫害发生面积占总面积50%左右,平均危害率达38.6%,最高的78.1%,严重影响苹果生长。其中危害严重的叶面害虫有:顶梢卷叶蛾(Spilonota lechiaspis
In recent years, with the adjustment of forestry industry structure, Fuyang City (formerly Fuyang City, the same below) Apple larger area of development. According to the statistics, by 1995, the city has planted 15,000 mu of apple trees, with the varieties mainly being fine varieties such as Red Fuji and Qin Guan, with more than 20 towns and villages distributed. However, due to the increasingly serious pests and diseases, the growth of trees is weakened, the result is postponed, and some trees even cause death. From 1993 to 1995, we surveyed the apple pests in Fuyang City and found that the occurrence area of apple tree pests accounted for about 50% of the total area with the average hazard rate of 38.6% and the highest of 78.1%, seriously affecting the apple growth. Among them, the most harmful foliar pests are: Spilonota lechiaspis