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松突圆蚧(Hemiberlesia pitysophila)是松树的一种严重害虫,以若虫和雌成虫固定在松针基部吸取汁液而造成为害。目前其分布仅限于日本的冲绳、台湾、香港、澳门和广东。广东于1982年首次发现,分布于珠江三角洲及其附近的珠海、斗门、台山、中山、新会、番禺、博罗、东莞、宝安、深圳、惠阳、惠州、惠东、紫金、海丰、增城等19个县市。至1986年9月发生面积已达471万亩,其中严重受害121万亩,且发生面积逐年增加。为寻找抗虫树种,制订防治措施和给造林更新的树种选择提供科学依据,1984年以来,我们对15种松树进行了接虫观察试验。现将3年的结果报导如下:
Hemiberlesia pitysophila is a serious pest of pine trees, nymphs and females are fixed on the base of pine needles to suck juice and cause damage. Currently its distribution is limited to Japan’s Okinawa, Taiwan, Hong Kong, Macao and Guangdong. Guangdong first discovered in 1982 in Zhuhai, Doumen, Taishan, Zhongshan, Xinhui, Panyu, Boluo, Dongguan, Baoan, Shenzhen, Huiyang, Huizhou, Huidong, Zijin, Haifeng and Zengcheng in the Pearl River Delta and its vicinity And other 19 counties. As of September 1986, the area has reached 4.71 million mu, of which 121 million mu have been seriously injured and the area has increased year by year. In order to find the pest-resistant species, formulate control measures and provide scientific basis for the selection of tree species for reforestation, we have conducted 15 pests observation experiments since 1984. Now the results of three years reported as follows: