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早期使用乙锰混剂防治苹果斑点落叶病效果好近年来，苹果斑点落叶病在我县一些果园严重发生，特别对一些感病品种如元帅系、白龙、印度等造成了早期落叶，影响了树势、产量、质量和花芽的形成。为探索对此病的有效防治方法，进行了不同时期使用乙锰混剂防治斑点落叶病的试...
In recent years, apple spot deciduous disease in some serious orchards in our county, especially for some susceptible varieties such as Marshal Department, White Dragon, India and other caused early deciduous, affecting the Tree vigor, yield, quality and flower bud formation. In order to explore the effective prevention and treatment of the disease, carried out at different times using B manganese mixture to prevent speckle disease test ...