种蝇Hylemyia platura Meigen 属双翅目花蝇科,又称根蛆。在赣北棉区常间断性的局部严重发生,是棉花播种期及苗期的主要害虫之一。常蛀入棉籽和幼苗根茎中,造成严重的烂籽、死苗、缺株断垄现象,甚至翻耕重种,对一播全苗威胁很大。因为有关这方面的资料缺乏,给防治工作带来很大困 Hylemyia platura Meigen is a Diptera, the Muscidae, also known as the root maggot. Occurred in the cotton fields in northern Jiangxi often severely intermittent occurrence of cotton sowing and seedling stage is one of the major pests. Often bore into cottonseed and seedlings rhizomes, resulting in serious rotten seeds, dead seedlings, lack of strains broken ridge phenomenon, and even overturned heavy seedlings, a great threat to the whole plant seedlings. Because of the lack of information in this regard, prevention and control work has brought great difficulties