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恶性杂草紫茎泽兰Eupatorium adenophorum Spreg在楚雄州南部地区传播和蔓延,给农林牧副业生产带来了严重的危害。单用机械或化学方法防治,成本高,难以控制。1985年4月,作者将中国科学院昆明分院生态室提供的紫茎泽兰天敌昆虫一泽兰实蝇Procecidoc-hares utilis Stone(双翅目实蝇科),在双柏县繁殖并在(?)嘉、南布河、和平、独田、城郊5点野外释放。到1987年3月已定殖扩散至5平方公里范围。泽兰实蝇能在海拔1200—1900米地区越冬,具有增殖速度快,食性专一特性,对紫茎泽兰有明显的抑制作用。
The malignant weed Eupatorium adenophorum Spreg spread and spread in southern Chuxiong Prefecture, which brought serious harm to the production of agriculture, forestry, animal husbandry and sideline products. Single mechanical or chemical control, high cost, difficult to control. In April 1985, the author of Procecidoc-hares utilis Stone (Diptera) from Eupatorium adenophorum, provided by Ecology Office, Kunming Branch of Chinese Academy of Sciences, Jia, South Buhe, peace, independence field, suburban release 5:00 field. To 1987 March has colonized and spread to 5 square kilometers range. Zeeland flies can overwinter in the 1200-1900 meters above sea level, with the proliferation of fast, food-specific characteristics of E. adenophorum have obvious inhibitory effect.