波尔多液是一种古老的保护性杀菌剂,至今还广泛用于防治多种果树和蔬菜病害。优良的波尔多液为天蓝色的胶状悬浮液。配制的原料有硫酸铜、生石灰和水;配制的比例要根据作物的种类和生育阶段来决定。有“等量式”(石灰和硫酸铜量相等)、“石灰少量式”(石灰量少于硫酸铜)和“石 Bordeaux mixture is an ancient protective fungicide that is still widely used to control a variety of fruit tree and vegetable diseases. Excellent Bordeaux mixture is a bright blue colloidal suspension. The preparation of raw materials are copper sulfate, quicklime and water; the proportion of the preparation according to the type of crop and the stage of birth to decide. There are “equivalent” (the same amount of lime and copper sulfate), “a small amount of lime” (lime less than copper sulfate) and "stone