自2005～2012年以来,随着气候逐年变暖,辽宁省海城地区又连续发生多次较严重的旱情,梨黄粉蚜作为次要害虫,在海城地区东部山区边缘环境较干燥、部分管理较粗放的南果梨园,因对其重视程度较低,致使梨黄粉蚜在南果梨主产区海城市常有大量发生,其危害程度也呈日益加剧趋势,仅2010年受害面积就达近0.67万hm2,给果农造成了重大经济损失。基于此就海城地区南果梨黄粉蚜病的发生和防治进行分析和研究。 Since 2005 ~ 2012, with the warming of the climate year after year, there have been several more severe successive dry spells in Haicheng, Liaoning Province. As a secondary pest, the yellow peash aphids are drier in the eastern mountainous area of ​​Haicheng and are partially managed The more extensive Nanguo pear orchard, due to its low level of attention, caused the pear yellow aphid in the main producing area of ​​South fruit pear often occur in large quantities, the degree of harm is also an increasing trend in 2010 alone, the victim area reached nearly 0.67 10,000 hm2, causing serious economic losses to farmers. Based on this analysis, the occurrence and prevention and cure of Nanguo pear yellow powdery mildew in Haicheng area were analyzed and studied.