灰霉病是保护地番茄最重要的病害之一 ,一般的喷雾防治常因增加温室湿度而防效不佳。粉尘法是适合于温室病害防治的新技术 ,具有操作简便、不增加温室湿度 ,防效高等优点。 1999年笔者进行了6.5%硫菌·霉威粉尘剂防治番茄灰霉病的药效试验 ,现将试验结果总结如下。1　试验材料 Botrytis cinerea is one of the most important diseases of tomato in the protected area. Generally, the spray prevention is often not effective due to the increase of the greenhouse humidity. Dust method is suitable for greenhouse disease prevention and control of new technologies, with easy operation, without increasing greenhouse humidity, high efficiency advantages. In 1999, I carried out the efficacy test of 6.5% sulfur and mold Granula dust control tomato gray mold disease, the test results are summarized as follows. 1 test material