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梨黄粉蚜 (Ａｐｈａｎｏｓｔｉｇｍａｊａｋｕｓｕｉｅｎｉｓ)属同翅目 ,根瘤蚜科 ,是梨产区主要害虫之一。山东费县栽植的梨品种以日本砂梨系统为主 ,而套袋梨果是生产砂梨优质高档梨果的关键技术措施。由于梨黄粉蚜喜阴怕光 ,套袋梨果无疑给其提供了有利的生长环境。据 1999
Aphanostigmajakusuienis belongs to Homoptera, Phylloxera, and is one of the major pests in pear-producing areas. The pear variety planted in Feixian County of Shandong Province is dominated by the Japanese sand pear system, while the bagging pear fruit is the key technical measure for producing high quality pear fruit of sand pear. Because pear yellow aphids like dark shade, bagging pear no doubt to provide it with a favorable environment for growth. According to 1999