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1.黑斑病(又称角斑病) 是油桐种植区最常见而且危害最大的病害。油桐得了黑斑病后,桐叶会提前落光,桐果尚未转色便开始脱落,严重
1. Black spot disease (also known as angular leaf spot) is the most common tung tree planting area and the most harmful diseases. Tung got black spot disease, leaves will fall early Tong, Tung fruit has not changed color began to fall, serious