apple valsa canker
常见例句
- 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。 - 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。 - But recently, the apple tree valsa canker caused by Cytospora spp occurred seriously and prevalently, which had became a threaten that held back the apple industry development.
然而,近年来苹果树腐烂病的普遍严重发生,已经对陕西苹果产业的顺利发展构成了严重的威胁。 返回 apple valsa canker