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一、病害识别苹果腐烂病主要危害结果树的枝干,造成皮层坏死腐烂,病部生黑色小点。一般呈椭圆形,暗褐色,质地松散、糟烂,中间有裂纹,边缘与健皮交界处稍
First, the identification of diseases apple rot disease main result of the devastating tree branches, resulting in cortical necrosis, sick black spots. Generally oval, dark brown, loose texture, bad, there are cracks in the middle, edge and health skin junction slightly