沙地果园苹果黄叶病防治试验

An Experiment on the Control of Apple Chlorosis in the Orchard on the Sandlot

针对沙地果园苹果黄叶病，采用了５种不同防治方法处理。试验结果表明，５种方法中ｐＨ为５的硫酸稀释液＋羊粪＋硫酸亚铁防治效果最为理想，树势恢复快，长势旺，无公害，具有一定的推广价值，如果结合土、肥、水管理，种植绿肥，改良土壤结构，则防治效果更佳。

Five methods are adopted to control apple chlorosis in the orchards with sandy soil. Satisfactory results are achieved by applying the mixture of dilute hydrofuric acid,sheep dung and ferrous sulfate with a pH value of 5.