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1000余亩蔬菜造成危害,其中以芹菜受害最重,被害株率几乎达到100%。 Relevant departments recently conducted an epidemiological investigation of the vegetable planting base in Tanzhou, Zhongshan City, Guangdong Province, and found that there are still no significant foreign pests recorded in our country - the leaf clover. The insects have caused harm to about 1,000 acres of vegetables in two local markets, of which the celery suffered the most damage, killing the strain rate of almost 100%.