文献类型：期刊文献

中文题名：连栽对桉树人工林土壤养分含量的影响

英文题名：Effects of Continuous Cropping on Content of Soil Nutrition in Eucalyptus Plantations

作者：明安刚[1,2] 温远光[2] 朱宏光[2] 王磊[2]

第一作者：明安刚

机构：[1]中国林业科学研究院热带林业实验中心;[2]广西大学林学院

年份：2009

卷号：38

期号：1

起止页码：26-30

中文期刊名：广西林业科学

外文期刊名：Guangxi Forestry Science

收录：CSTPCD

基金：国家教育部留学回国人员科研启动基金(19972832);广西林业局和南京环境科学研究所资助项目

语种：中文

中文关键词：桉树;人工林;连栽;土壤养分

外文关键词：Eucalyptus plantations; continuous cropping; soil nutriention

分类号：S718.5

摘要：采用时空序列和定位监测相结合的方法，对广西东门林场连栽桉树人工林土壤养分的变化情况进行了研究。结果表明连栽导致桉树人工林多数土壤养分含量不同程度的下降：（1）土壤的pH值、土壤交换性Ca和速效K在0～20cm和20～40cm土层都有不同程度的降低，但不显著；土壤有机质、水解N和全K在0～20cm土层显著下降，在20～40cm土层，变化不显著；（2）全N在20～40cm土层，显著下降，在0～20cm土层变化不显著；有效P在0～20cm和20～40cm土层无显著变化，全P在20～40cm土层显著上升；交换性Mg在0～20cm和20～40cm土层都显著下降；（3）在0～40cm土层，全N、水解N、交换性Mg显著下降，土壤pH值、有机质、全K、速效K及交换性ca有不同程度的下降，但不显著。
By the methods of time-space series analysis and field monitoring, this paper studied the change of soil nutrient content in Dongmen Eucalyptus plantations of Guangxi. The results showed that continuous cropping of Eucalyptus plantations resulted in a decrease of the most soil nutrient to different extent compared with the first generation： （1） At 0--20cm and 20-40cm soil layer, pH, available K and Ex-Ca^2＋ showed a decreasing trend to different extent, but not significant. At 0--20cm soil layer, the content of organic matter, available N and total K decreased markedly, but no markedly change at 20--40cm soil layer; （2） The total N content significantly decreased at 20--40cm soil layer, but no markedly change at 0- 20cm soil layer. The available P had no markedly change both at 0- 20cm and 20-40cm soil layer; but the total P increased markedly at 20 40cm soil layer. The Ex-Mg^2＋ content markedly decreased both at 0--20cm and 20--40cm soil layer; （3） At 0 --40cm soil layer, the total N, available N and Ex-Mg^2＋ markedly decreased and the pH value, organic matter, total K, available K and Ex-Mg^2＋ showed a decrease trend to different extent, but not significant.