石流合剂是果园中一种常用的保护性杀菌剂，其有效成分是多硫化钙，具有较强的杀菌杀虫能力，残效期为１５天。波尔多液也是一种常用的保护性杀菌剂，其有效成分是不溶于水的碱式硫酸铜，喷布于叶果上干燥后，形成一层薄药膜，起保护和杀菌的作用，残效期为１５－２０天。... Stone flow mixture is a commonly used protective fungicide orchard, the active ingredient is calcium polysulfate, has a strong bactericidal insecticidal capacity, residual validity of 15 days. Bordeaux mixture is also a commonly used protective fungicide, the active ingredient is water-insoluble basic copper sulfate, sprayed on the dried fruit leaves, forming a thin film, play a protective and bactericidal effect, residual period For 15-20 days. ...