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近年,浙江各柑桔产区大面积的桔园在冬春大量发生叶枯,随之出现落叶和枯梢。此病发展快为害严重。为了解决柑桔生产中出现的新问题,自1980年～1983年笔者对此病进行了研究,认为是柑桔炭疽病的叶枯类型,现将研究结果报告如下: 一、症状与为害 初期症状是在叶片上下表皮出现黄褐色或褐色微肿的病斑。人们常称为叶片“打
In recent years, a large area of citrus orchards in various citrus producing areas in Zhejiang Province withered large amounts of leaf blight in winter and spring, followed by deciduous leaves and blight. The rapid development of this disease is serious. In order to solve the new problems in the production of citrus, from 1980 to 1983, the author studied the disease and considered the citrus anthracnose as a type of leaf blight. Now the research results are reported as follows: First, the symptoms and damage the initial symptoms Is a yellowish brown or brown lesions on the upper and lower epidermis of leaves. People often call it a blade