用瑞毒霉“灌根”防治葡萄霜霉病,操作简单、用药经济、效果显著,做法是: 在7月中下旬(发病之前),用钢锯条在葡萄骨干根或地表下主干横锯3～5道伤口,伤口长为根周长的1/4,深至木质部,然后将瑞毒霉少量粉剂(亩用量100～150克)洒在伤口处,然后培土封严,灌少量水即可。 Ruixi mold “irrigation” prevention and control of grape downy mildew, simple operation, medication economy, the effect is remarkable, the practice is: in late July (before the onset), with a hacksaw blade in the roots or under the surface of the grape root skeleton saw 3 ~ 5 wounds, the wound length of the root circumference of 1/4, as deep xylem, and then a small amount of dust injection of Remyzoin (mu amount of 100 to 150 grams) spilled at the wound, and then sealed earth, irrigation with a small amount of water .