波尔多液是果园常用的保护性无机杀菌剂，具有粘着力强，不易被雨水冲刷，残效期长，应用范围广等特点。其杀菌成分是碱性硫酸银，可防治多种病害。用此药有十忌：一忌用陈旧的熟石灰代替生石灰。熟石灰富合碳酸钙，含氢氧化钙少，配制后的药剂易发生药害。二忌用铁制或铝制容? Bordeaux mixture is commonly used in the orchard protective inorganic fungicides, with strong adhesion, easy to be washed by the rain, long residual period, the application of a wide range of features. Its bactericidal composition is alkaline silver sulfate, can prevent a variety of diseases. Use this medicine have ten bogey: Avoid using the old lime instead of lime. Rich in calcium carbonate hydrated lime, containing less calcium hydroxide, the preparation of the pharmaceutical prone to injury. Two avoid using iron or aluminum capacity?