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近年来,外来有毒有害植物的入侵和蔓延给我国农业生产和生态环境造成的危害和影响有日渐加重的趋势。根据农业部办公厅农办农[2002]27号文件“关于开展外来有毒有害植物专项调查的紧急通知”,及针对有毒有害植物——豚草、假高粱、紫茎泽兰的危害特点、传播途径,杭州市各县(市、区)于2002年7～10月共出动209人次,对40余个乡镇的农田、田边地头、沟渠边、河流湖泊边、草场、公路沿线等不同生态类型,开展了专项调
In recent years, the harm and impact caused by the invasion and spread of exotic toxic and harmful plants to our country’s agricultural production and ecological environment have been increasing. According to the document “Agricultural Development Office of Agriculture [2002] No.27” on the special investigation of harmful alien species and the emergency notification, and poisonous and harmful plants - ragweed, fake sorghum, Eupatorium adenophorum harm characteristics of transmission Way, all counties (cities, districts) of Hangzhou dispatched 209 people from July to October in 2002. They carried out a total of 209 trips to farmland in more than 40 towns and townships, including Tanabe land, ditches, rivers and lakes, pastures, roads and other ecological types , Carried out a special tune