摘要
采用Kenworthy的叶片营养诊断法,确定了山楂叶片N、P、K、Mg、Fe、Zn、Mn、Cu8种丰产营养指标,其中叶片含氮量是影响山楂产量的主导因子。不同的品种的叶片营养成分含量不同。土壤肥力是影响叶片矿质营养的主要外部因子。据此,为山楂施肥合理化,标准化提供了科学依据。
The application of Kenworthy's leaf nutrition diagnosis in determining the indices of the eight minerals crucial for a high yield in hawthorn (Crataegus pinnatifida) leaves, i.e .N, P , K, Mg, Fe, Zn, Mn and Cu , revealed the leading role N plays in a rich harvest. The element concentrations varied by variety, and soil fertility proved to be the principal external cause affecting the blade nourishment. This study can serve as a scientific basis for adequate and standardized fertilization on hawthorn trees.
出处
《经济林研究》
1989年第2期39-42,共4页
Non-wood Forest Research
关键词
山楂
叶片
矿质营养
施肥
Crataegus pinnatifida, Leaf mineral nutrition, Leaf analysis
