随着我区新烟区的开辟,烟蚜对烟草的种植和品质都造成严重威胁。使用化学防治烟蚜,仍是一个有效的重要手段,但由于采收烟叶的季节长,为减少残留,从我区实际出发,自制了两种土农药蓖麻叶水和洋葱头水,经药效试验发现施用这两种土农药后,药效分别高达77.3％和 With the development of new tobacco area in our district, the tobacco aphid poses a serious threat to the cultivation and quality of tobacco. The use of chemical control of tobacco aphid is still an effective and important means, but due to the season of harvesting tobacco leaves, in order to reduce the residue, starting from the actual situation in our region, made two kinds of soil pesticides castor leaves and onion water, medicine Effect tests found that the application of these two pesticides, the efficacy of up to 77.3% and