烟蚜是烟草上的主要害虫之一,在烟草整个生育期均发生为害,严重影响烟叶质量和产量。对该虫的防治长期来都是用农药进行喷雾,此方法其防效较差,持效期短,导致施药频繁,药量不断增加,而且大量天敌被杀伤,加速害虫抗药性产生,继而形成恶性循环。针对这种情况,笔者利用药剂的内吸渗透性,采用内吸杀虫剂涂抹烟草茎秆的方法防治烟蚜,取得了较好的效果。现将材料整理于后。一、材料与方法 Aphis is one of the major pests on tobacco, which occurs throughout the growing period of tobacco and seriously affects the quality and yield of tobacco. The prevention and treatment of this pest has long been sprayed with pesticides. This method has poor control effect and short holding period, which leads to frequent application of pesticides and continuous increase of dosage. In addition, a large number of natural enemies are killed and pesticide resistance is accelerated, A vicious circle. In view of this situation, I use the drug’s permeability, the use of insecticide within the tobacco stalks smear tobacco aphids, and achieved good results. Now organize the material in the post. First, materials and methods