百菌清防治保护地蔬菜霜霉病效果好高新章（河北曲阳农广校０７３１００）温室和大棚里的蔬菜霜霉病发生普遍，用百菌清烟雾剂防治最有效。其施用法和注意事项如下：１、用量大棚、温室每亩次用药２００～２５０克。在临病前或发病初开始施用，以后每隔７～１０天施用１次... Chlorothalonil prevention and control of vegetables to prevent moldy mildew effect high new chapters (Hebei Agricultural University, Quyang 073100) Vegetables and vegetables in greenhouse and greenhouse downy mildew occurs generally, with chlorothalonil aerosol prevention and treatment of the most effective. The application method and precautions are as follows: 1, the amount of greenhouse, greenhouse acre drug 200 to 250 grams. Before illness or early onset of application, after every 7 to 10 days to administer 1 ...