土壤化学指标对杉木中龄林生长量的影响  

Effects of Soil Chemical Indexes on the Growth of Chinese Fir Immature Timber

作　　者：陈琴[1] 黄开勇[1] 段爱国[2] 劳广杰 韦正成 张峰 戴俊[1] 程琳[1] CHEN Qin;HUANG Kai-yong;DUAN Ai-guo;LAO Guang-jie;WEI Zheng-cheng;ZHANG Feng;DAI Jun;CHENG Lin(Guangxi Forestry Research Institute,Nanning 530002,China;Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;Xishan Forest Farm of Rong’an County,Rong’an,Guangxi 545400,China;Beijianghe Forest Farm of Rongshui County,Rongshui,Guangxi 545300,China;Xianshui Forest Farm of Quanzhou County,Quanzhou,Guangxi 541500,China)

机构地区：[1]广西壮族自治区林业科学研究院,南宁530002 [2]中国林业科学研究院林业研究所,北京100091 [3]融安县西山林场,广西融安545400 [4]融水县贝江河林场,广西融水545300 [5]全州县咸水林场,广西全州541500

出　　处：《广西林业科学》2017年第2期150-154,共5页Guangxi Forestry Science

基　　金：国家重点研发计划项目(2016YFD0600302-3);国家科技支撑计划课题(2015BAD09B010105);广西林业科技项目(桂林科字[2013]第4号

摘　　要：对3个试验地的杉木(Cunninghamia lanceolata)良种林分林地土壤化学指标及林分生长量展开调查,分析不同试验点土壤化学指标及林分生长量间的差异,探讨土壤化学指标与林分生长量间的相关性。结果表明:3个试验地的林地土壤化学指标间差异显著,其中A层土壤差异显著性高于B层。西山林场林地A层土壤全磷和速效磷显著高于咸水林场和贝江河林场;咸水林场林地A层土壤有机质、全氮、全钾、速效钾和交换性钙含量均最高;贝江河林场林地A层酸碱度、全磷、全钾、速效磷、交换性钙和交换性镁含量均最低。西山林场所有的林分生长指标显著高于其他两个林场,其中平均树高(13.0 m)和平均胸径(14.3 cm)分别比咸水林场高47.8%、66.7%,分别比贝江河林场高24.3%、34.9%。所有的林分生长指标与A层酸碱度、全磷及速效磷含量显著正相关,与其他土壤化学指标无显著相关性。Soil chemical indexes and stand growth of Chinese fir improved varieties stand in three different sites were investigated,and the differences of soil chemical indexes and stand growth among different sites were analyzed,and the correlation between soil chemical indexes and stand growth were discussed.The results showed that there were significant differences on soil chemical indexes among three test sites,and the differences in soil layer A were more apparent than those in soil layer B.In soil layer A,the contents of total phosphorus and available phosphorus in Xishan forest farm were significantly higher than those in Xianshui forest farm and Beijianghe forest farm,and the contents of soil organic matter,total nitrogen,total potassium,available potassium and exchangeable calcium in Xianshui forest farm were the maximum value,and contents of soil potential of hydrogen,total phosphorus,total potassium,available phosphorus,exchangeable calcium and exchangeable magnesium in Beijianghe forest farm were the minimum value.All stand growth indexes of Xishan forest farm were significantly higher than those in the other forest farms,and its mean tree height(13.0m)and mean DBH(14.3cm)were higher than Xianshui forest farm by47.8%,66.7%and higher than Beijianghe forest farm by24.3%,34.9%respectively.All stand growth indexes had significant correlations with soil potential of hydrogen,total phosphorus and available phosphorus in soil layer A,and had no significant correlation with the other soil chemical indexes.

关 键 词：杉木 土壤化学指标 中龄林 生长量 

分 类 号：S791.27[农业科学—林木遗传育种]