呋喃丹是一种高效、高毒、内吸性很强的广谱性杀虫剂。美国在七十年代初用3%呋喃丹颗粒剂,先后在水稻、玉米、甜菜等作物上进行土层深施或土表撒施应用试验,取得了良好效益。 我省棉区害虫危害严重,一般在棉花生育期间要施用农药10-15次,成本高、效益低。1979年我们试用3%呋喃 Carbofuran is a highly efficient, highly toxic and highly systemic broad-spectrum insecticide. The United States in the early seventies with 3% carbofuran granules, successively in rice, corn, sugar beet and other crops for soil or soil surface spreading application test, and achieved good results. Insect pests in our province cotton serious harm, generally during the growth of cotton to pesticides to be applied 10-15 times, high cost, low efficiency. In 1979 we tried 3% furan