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杜鹃花已成为重要的花卉,种类繁多。在杜鹃花大量繁育的过程中,一种新的病害—杜鹃花枯梢病,正在威胁杜鹃花的发展。为此,笔者对该病进行了3年的观察和研究现报道如下。1 病害症状受害的杜鹃花,新梢和芽变色,凋萎变细,顶部弯曲下垂呈钩状,自弯曲部向下逐渐脱叶,仅
Azaleas have become an important flower with a great variety. In the rhododendrons in the breeding process, a new disease - rhododendron blight, is threatening the development of rhododendron. To this end, the author of the disease for 3 years of observation and research are reported below. 1 disease Symptoms of rhododendrons, shoots and buds discoloration, wilting thinning, the top bending sagged hook-shaped, from the curved downward gradually decay, only