长期以来应用化学农药滴滴涕防治烟草的主要害虫——烟青虫,效果很好。但滴滴涕残毒量过高,既有害于人体健康,也影响外贸出口,因此寻找一种无残毒的滴滴涕代用品已成为当前烟草生产中急待解决的重大问题。我们在去年青虫菌防治烟青虫的试验示范基础上,决定进一步扩大示范面积,验证率果、 Long-term application of chemical pesticides DDT prevention and control of tobacco major pests - tobacco budworm, the effect is very good. However, the high residual amount of DDT is not only detrimental to human health, but also affects the export of foreign trade. Therefore, finding a replacement drug without DDT has become a major issue to be solved urgently in tobacco production. Based on the experimental demonstration of prevention and treatment of tobacco budworm by Coccidiosis last year, we decided to further expand the demonstration area, verify the results,