森林与环境学报Issue(1)：8-14,7.DOI:10.13324/j.cnki.jfcf.2016.01.002
不同林龄巨尾桉人工林土壤养分变化
Soil nutrient dynamics in Eucalyptus urophylla×Eucalyptus grandis plantation at different ages
摘要
Abstract
To meet the nutrient demand and sustainability of plantation, soil nutrient contents of E.grandis plantation that aged from 1-6 years old were investigated at three soil depths ( 0-20 cm, 20-40 cm and 40-60 cm) in Zhangzhou, Fujian.Results showed that except soil pH that increased with age (P<0.05), soil organic matter (SOM), total nitrogen (TN), hydrolysable nitrogen (HN), total phosphorus (TP), available phosphorus (AP), total potassium (TK), available potassium (AK), available boron ( AB) and CEC all decreased with age and soil depth ( except TK increased with soil depth) .Negative correlations were all found between pH and SOM ( P<0.05) , pH and TN ( P<0.01) , AK ( P<0.01) , AB ( P<0.01) .Principal component analysis was used to test the soil fertility and was found the overall soil fertility decreased with plantation age.And the factors that dominating soil fertil-ity were TK, SOM, TP, HN and AB.To summarize, soil nutrient diagnosis should be incorporated into plantation fertilization to maintain a balanced nutrient level.Organic fertilizer, biofertilzier, especially phosphorate and boron that are more likely to be lacking, should be taken care of during rotation period of aged plantation.关键词
巨尾桉/人工林/土壤养分/土壤肥力/有效硼Key words
Eucalyptus urophylla×E.grandis/plantation/soil nutrient/soil fertility/available boron分类
农业科技引用本文复制引用
王纪杰,王炳南,李宝福,俞元春..不同林龄巨尾桉人工林土壤养分变化[J].森林与环境学报,2016,(1):8-14,7.基金项目
林业科技成果国家级推广项目（［2015］41号）；国家林业公益性行业科研专项（200804040）。 （）
