草木灰中含有大量的钾、镁、钙、硅等微量元素,是一种良好的作物叶面肥和保护剂。用其浸出液喷洒叶片后,可促进黄瓜根系对氮、磷的吸收,增强植株的抗病能力。 一、防治效果 露地或保护地黄瓜,在定植缓苗后每隔10～15天喷施1次草木灰液,可使黄瓜的细菌性角斑病发病率降低30％。如果用草木灰浸出液与乙磷铝混合施用,对黄瓜霜霉病的防治效果明显高于单施乙磷铝。同时,对植株灰霉病、菌核病也有较好的防效。 二、配制与使用 将1公斤纯干草木灰加水14公斤,浸泡24～30小时,其间搅动3 Ash contains large amounts of potassium, magnesium, calcium, silicon and other trace elements, is a good crop foliar fertilizer and protective agent. After spraying the leaves with its leaching solution, it can promote the absorption of nitrogen and phosphorus in the root system of cucumber and enhance the disease resistance of the plant. First, the control effect of open field or cucumber protection, planting Hulaiao every 10 to 15 days after spraying 1 ash, cucumber bacterial angular leaf disease can reduce the incidence of 30%. If the grass ash leaching solution mixed with phosphorus and aluminum, cucumber downy mildew control effect was significantly higher than that of phosphorus alone. At the same time, Botrytis cinerea, sclerotinia also have good control effect. Second, the preparation and use of 1 kg of pure hay ash add water 14 kg, soak for 24 to 30 hours, during which stirring 3