桑赤锈病是我省桑树的主要病害之一。我们于85年和86年春进行应用“灭病威”防治桑赤锈病试验,取得一定效果(试验情况已刊于《广东蚕丝通讯》86年第2期)。86年10月,我们再次在大田进行示范试验。现将试验情况小结如下:一、试验材料及方法1.供试药物及浓度灭病威(40％多-硫胶悬剂,广州珠江电化厂生产)400倍、600倍;清水对照(CK)。 Sang red rust is one of the main diseases of mulberry trees in our province. In 85 and 86 years of spring, we applied the “Disease Control Granville” to control the experiment of mulberry red rust and achieved certain results. (The experiment has been published in “Guangdong Silk Communication” No.26, 1986). In October 1986, we again conducted demonstration tests in Daejeon. The test conditions are summarized as follows: First, the test materials and methods 1 for the test drug and the concentration of diseased Wei (40% - sulfur suspension, Guangzhou Pearl River Electrification Factory) 400 times, 600 times; .