煤污病;
The resistance to yellow dwarf disease and black bacterial blight were stronger than that of the control.
抗桑黄化型萎缩病和桑疫病强于对照。
Leading Factor of Prunus spp. Black Blight and Its Control
诱发桃形李煤污病的主导因子和防治方法
Besides two pathogenic types of mulberry bacterial disease black blight and crinkle leaf in recent years another sympton type broken leafstalk was discovered.
近年来发现桑细菌性疫病除黑枯型、缩叶型外,还有一种新的症状类型&断柄型。
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