甘肃省榆中农药厂、西北农业大学无公害农药研究中心和甘肃省农科院等单位利用榆中所产黄花烟中的高含量烟碱 ,研制成功无公害杀虫剂“净叶宝”。该产品对棉花、小麦、玉米、蔬菜、瓜果等农作物害虫有良好的防治效果 ,具有高效、低毒、无污染、使用安全等优点。药效残留检测实 Gansu Yuzhong Pesticide Factory, Northwest Agricultural University pollution-free pesticide research center and the Gansu Provincial Academy of Agricultural Sciences and other units using the yellow smoke produced in Yuzhong nicotine, developed a pollution-free pesticide “net Yebao.” The product of cotton, wheat, corn, vegetables, fruits and other crop pests have a good control effect, with high efficiency, low toxicity, no pollution, the use of safety and so on. Remaining drug residue detection