伏牛山南坡山茱萸主要营养元素年动态规律研究  

Laws of Dynamic Annual Change of Main Nutritive Elements in Macrocarpium officinala on South Slope of Mountin Funiu

作　　者：谢青芳[1] 孟祥远[1] 赵喜莲[1] 安春仙[2] 

机构地区：[1]河南农业大学 [2]郑州轻工业学院

出　　处：《河南农业大学学报》1992年第2期202-206,共5页Journal of Henan Agricultural University

摘　　要：1989～1990年对山茱萸叶片、果实主要营养元素年动态变化规律研究结果表明:果实的氮、磷随叶片变化而变化,钾则相反。无论高、中、低产树,叶片年均含氮量(1.281%～1.854%)均偏低,磷素(0.066%～0.084%)缺乏,这是造成4、5月份生理落果的主要原因。钾素(1.021%～1.701%),营养居中等水平。三种元素的营养转换期依次出现于5、7、8月份。大、小年影响树势平衡,10月中旬各叶片氮、磷、钾含量差异极显著。The experiment carried out in 1989～1990 showed that nitrogen and phosphorus con- tents in fruit varied with different nutritive element contents of leaves,no change was shown in potassium content.The average nitrogen contents(1.281%～1.054%)in leaves were slightly low; average phosphorus contents(0.066～0.084%)were deficient.Such low nutritive contents were the main reason why the phenomenon of physiological premature drop occurred.Differences among the contents of nitrogen,phosphorus and potassium in various leaves were significant in the middle ten days of October.

关 键 词：山茱萸 叶片 果实 营养元素 

分 类 号：S567.190.1[农业科学—中草药栽培]