南方农业学报2013，Vol.44Issue(1)：33-38,6.DOI:10.3969/j:issn.2095-1191.2013.1.33
八角叶片营养元素的季节动态变化特征及其相关性
Seasonal dynamic characteristics and nutrient elements correlations in Illicium verum leaves
摘要
Abstract
[Objective]The seasonal dynamic characteristics and the correlations between N, P, K, Ca, Mg, Cu, Zn, Fe, Mn, and B elements in mature Illicium verum leaves were studied in order to provide theoretic foundation for achieving timely fertilizer application, suitable fertilizer type, and appropriate fertilization concentration in Illicium verum cultivation. [Method]Using the normally grown 15-year old mature Illicium verum forest as investigation subject, samples were collected 1 time around every 60 days to determine the nutrient element content in mature leaves, analyze the seasonal dynamics characteristics, and evaluate the correlations between the elements. [Result]Large and medium amounts of nutrient element contents in mature leaves of Illicium verum were arranged in the following order: N>K>Ca>Mg>P, while the content of trace elements were arranged in the following order: Mn>Fe>B>Zn>Cu. The nutrient element content in leaves fluctuated according to seasonal changes. For large and medium amounts of elements, the fluctuation was small, but in trace elements, the fluctuation was noticeable large. P, Ca, Cu, Zn, B, and other nutrient elements were consumed along with plant growth, which caused the element contents in mature leaves to decrease. [Conclusion]There were certain seasonal dynamic changing rules of the nutrient element content in Illicium verum leaves. During the exuberant growth season, the elements consumption increased sharply due to the nutrient necessity in plant reproductive organs and new tip leavcs, which lead to the decline of some nutrient element contents in mature leaves. Fertilization should be applied during early growth stages before the exuberant growth period, and at the same time, the amount of every nutrient elements should be coordinated in order to avoid excessive antagonistic actions between the elements.关键词
八角/叶片/营养元素/季节动态/相关性Key words
Illicium verum/ nutrient element/ seasonal dynamic/ correlation分类
农业科技引用本文复制引用
黄开顺,李德满,李开祥,曾祥艳,农必昌..八角叶片营养元素的季节动态变化特征及其相关性[J].南方农业学报,2013,44(1):33-38,6.基金项目
中央财政林业科技推广示范项目([2011]TG06号) （[2011]TG06号）
广西林业科学研究院基本科研业务费项目(林科201113号) （林科201113号）
