梨树腐烂病(Valsa canker)是最为严重的病害之一,主要危害主干、主枝和侧枝。该病具有发生区域广、发病率高、难以控制的特点,发病严重的梨园,树体病疤累累、...
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Apple Valsa Canker 苹果树腐烂病 ; 腐烂病
valsa canker of apple 苹果树腐烂病
apple tree valsa canker 苹果树腐烂病
It was revealed in an extensive survey that the occurrence of apple Valsa canker (Valsa ceratosperma) is correlated negatively with potassium content in bark.
矫治试验结果表明，春季增施钾肥，可提高树皮含钾量并减轻腐烂病发生程度。
The effects of S-921 strain (Streptomyces aureus) and its fermented broth on apple tree canker, Valsa mali, were tested by plating and free culture methods.
采用平板和离体培养法测定S-921菌株及其发酵液对苹果树腐烂病菌的作用。
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