１前言克百威是一种高毒高效的氨基甲酸酯类农药，自７０年代美国ＦＮＣ公司在中国大面积推广应用至今，一直保持着良好的杀虫杀线虫效果。由于克百威的毒性太大，国内外都制备成低毒化的颗粒剂、种子包衣剂和干种子处理剂等剂型，以避免中毒事故。由于克百威原药的晶型较... 1 Foreword Ke Weiwei is a highly toxic and highly efficient carbamate pesticide, since the 1970s, the United States FNC large-scale promotion and application in China so far, has maintained a good insecticidal nematicidal effect. Due to the toxicity of carbofuran too, both domestic and international preparation of low toxic granules, seed coating agent and dry seed treatment agent and other dosage forms to avoid poisoning. Because of the original crystal clenbuterol form ...