土壤元素与木麻黄生长和VA菌根菌侵染率的关系  

Relationship between Soil Factors and Growth or VAM nfection in Casuarina Plantations in Southern China

作　　者：仲崇禄[1] 弓明钦[1] 康丽华[1] 

机构地区：[1]中国林业科学研究院热带林业研究所

出　　处：《林业科学研究》1998年第2期135-141,共7页Forest Research

基　　金：国家科学基金

摘　　要：通过对华南地区沿海１５种有代表性的木麻黄林土壤调查，收集土样４９个，对土样测定了全Ｃｏ、Ｃｕ、Ｚｎ、Ｍｎ和Ｆｅ含量，速效Ｎ、Ｐ和Ｋ含量，有效Ｃａ、Ｍｇ和Ｂ含量及ｐＨ值等１２个指标，结果表明：树木年均高生长量与土壤有效Ｃａ和全Ｚｎ呈显著正相关，而与全Ｍｎ呈显著负相关；树木平均胸径生长量与土壤ｐＨ值和全Ｃｏ呈显著正相关，与全Ｍｎ呈显著负相关；苗高与所有土壤因子无显著相关；苗木地径与Ｐ、Ｍｇ、Ｍｎ有显著正相关，与Ｋ和Ｆｅ呈负相关；苗木侵染率与Ｐ和Ｆｅ有显著正相关，与Ｂ和Ｃｕ呈负相关。但逐步回归分析表明，土壤Ｎ与林木生长及苗木侵染率间无显著相关。同时还探讨了有利于ＶＡ菌根菌侵染的某些土壤因子的变化范围，及土壤类型与ＶＡ菌根菌侵染率的关系。At 15 typical sites in Casuarina plantations in southern China,49 soil samples were collected,and 26 mixed samples were analyzed for 12 indexes:pH,available P,N,K,Ca,Mg and B,total Cu,Zn,Mn,Co and Fe. Results showed that there were significant correlation( p =0.10～0.01) between soil Ca,Zn,Mn and annual average tree hight increment (m/year),between soil pH,Co,Mn and annual average tree diameter at 1.3 m high(cm/year),and between soil P,K,Mg,Fe,Mn and average seedling diameter at ground level,and between soil P,B,Cu,Fe and VAM infection.But there was no significant difference between N and the 5 indexes.Besides,the effect of soil types on VAM infection was discussed.

关 键 词：木麻黄 土壤元素 生长 VA菌根菌 侵染 

分 类 号：S792.930.6[农业科学—林木遗传育种]