皖北故道地区是砀山酥梨的主产区。梨小食心虫 (简称梨小 )是砀山酥梨的主要害虫之一。近年来 ,梨小的发生呈上升趋势 ,为害连年加重 ,部分梨园的虫果率达 30 %以上。笔者调查分析了梨小的发生特点及发生加重原因 ,探讨了防治对策。1　发生为害特点梨小在砀山地区主要为害桃、? Old North Road area is the main producing area Dasan pear. Pear small heart worms (referred to as small pear) is one of the main Pear Hill Pear pests. In recent years, the occurrence of small pears is on the rise, pests increase year after year, some pear fruit rate of more than 30%. The author investigates and analyzes the peculiarities of pears occurrence and the causes of aggravating, and discusses the control measures. 1 pests occurred pears in the mountain area is mainly harmful peach?