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松突圆蚧(Hemiberlesia pitysophilaTakagi)属盾蚧科突圆蚧属,是近年在广东省新出现的松树害虫,为害马尾松、黑松、加勒比松、火炬松、湿地松等松属树种。该虫生活隐蔽,多寄生于针叶基部叶鞘内,将口针插入叶部维管束吸取液汁或直接吸取细胞液,导致针叶萎黄,林木生长衰退和枯死。据广东省林业厅1984年调查,在珠海、深圳、中山、惠阳、斗门和东莞等12个沿海县、市的松林受松突圆蚧为害面积达257万亩,其中142万亩严重受害。湿地松为南方大面积引种的树种,以生长速度快、树干通直、抗逆性强等特点称著,深受群众喜爱。我省从六十年代开始至今已经种植湿地松达300多万亩,成为造林绿化主要树种之一。
Hemiberlesia pitysophilaTakagi belongs to the genus Caenorhabditis. It is a newly emerged pine pest in Guangdong Province in recent years. It is harmful to Pinus massoniana, Pinus thunbergii, Caribbean pine, Pinus taeda, Pinus elliottii and other pine species. The insects live in seclusion, more parasitic in the leaf sheath at the base of the needle, the needle inserted into the leaflet vascular bundle to draw juice or directly draw cytosol, resulting in needle chlorosis, tree growth recession and withered. According to a survey conducted by the Guangdong Provincial Forestry Department in 1984, in the 12 coastal counties of Zhuhai, Shenzhen, Zhongshan, Huiyang, Doumen and Dongguan, the affected area of Songtianhe Scale in the city was 2.57 million mu, of which 142 million mu were seriously injured. Slash pine is a large species introduced species in the south, with fast growth, trunk straight, strong resistance and other characteristics called, by the masses favorite. Since the beginning of 1960s, our province has planted more than 300 million mu of wetland pine to become one of the main tree species for afforestation and afforestation.