套袋苹果叶片主要病害的发生与防治
YANTAI FRUITS(2010)
Abstract
胶东部分果园近几年叶部病害有加重的趋势.发病严重的果园,出现早期落叶现象,影响花芽分化、果品产量和质量.
1 病害种类
1.1 苹果褐斑病 目前危害较普遍的苹果叶部病害,主要表现在叶片上,病斑褐色,边缘绿色不整齐.
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