摘要
对腐烂病病害程度不同的金冠苹果树进行了叶样的氮、磷、钾含量的测定及树盘下土样的速效钾分析。结果表明：１、腐烂病的病害程度与树体及土壤内的含钾量呈显著负相关，即腐烂病越严重，树体及土壤内的含钾量越低。２、腐烂病的病害程度与树体内的氮、磷含量无显著的相关关系。
The contents of nitrogen, phosphate and potassium were analyxed in leaves and soils of Golden Delicious apple trees which had different disease grades of apple tree canker. The results indicated: (1) The disease grades of apple trees were significantly inversely correlated with the contents of potassium in leaves and soils of the trees, i. e. the higher disease grades the trees had, the less contents of potassium in leaves and soils of the tree contained. (2). The disease grades of apple irces did not show signifcant correlation with the contents of nitrogen and phosphate in leaves and soils of the trees.
基金
省青年基金资助
关键词
苹果树
腐烂病
含钾量
土壤
树体
apple tree canker
colltents of potassium
eorrelation
