杉木幼龄林叶片营养元素含量与林木生长的相关性

本文重点论述丘陵立地条件下 ,1、2代杉木幼龄林高生长、当年高生长、胸径生长与叶片中营养元素N、P、K、Ca、Mg、Cu、Mn、Zn、Fe含量的相关关系 ,进而从林木营养这个角度 ,为提高林木产量、防治地力衰退提供可靠的科学依据。研究结果表明 :2代杉木幼龄林生长与N、P、Mg、Cu、Mn、Fe含量呈密切的正相关。 1代杉木幼龄林生长虽与P、Mg、Cu、Mn、Fe含量呈正相关 ,但复相关系数数值偏低。也就是说土壤养分含量尚没有明显影响 1代杉木幼龄林正常生长

CORRELATIVITY BETWEEN GROWTH AND NUTRIENT CONTENTS IN FOLIAGE OF YOUNG CHINESE FIR PLANTATION

This article dealt with the correlation between the nutrient contents of N,P,K,Ca,Mg,Cu,Zn,Mn,Fe in foliages and the height growth, current height growth, and the growth of DBH of young Chinese fir plantation during the first and second rotation grown under hill site conditions. Then the scientific basis was provided for increasing timber yield and preventing and curing soil fertility degradation from the angle of forest tree nutrition. The research results showed that there was a closely positive correlation between the growth of young Chinese fir plantation in the second rotation and the contents of N,P,Mg,Cu,Mn,Fe. The coefficient values of complex correlation was lower for the first rotation, compared with the second rotation, suggesting that there was not obvious influence of soil nutrient content on the normal growth of young Chinese fir plantation in the first rotation.