从国家林业局获悉,有关部门近日对广东省中山市坛洲镇蔬菜种植基地进行疫情调查时,发现我国尚无记录的重大外来有害生物——三叶斑潜蝇。该虫已对当地两个菜场约67hm2蔬菜造成为害,其中以芹菜受害最重,被害株率近100%。三叶斑潜蝇在美洲、欧洲、亚洲和非洲都有分布。我国周边发 It is learned from the State Forestry Administration that when the epidemic investigation was carried out on the vegetable planting base of Tanzhou Town, Zhongshan City, Guangdong Province, the authorities concerned found that there are still no significant exogenous pests recorded in our country, the leaf clover. The insects have caused damage to about 67hm2 of vegetables in two local farms, of which celery is the hardest hit, killing nearly 100% of the strains. Leafminers are distributed in the Americas, Europe, Asia and Africa. Around my hair