四川农业大学学报 ›› 2007, Vol. 25 ›› Issue (03): 311-315.doi: 10.16036/j.issn.1000-2650.2007.03.023

• 研究论文 • 上一篇    下一篇

巨桉人工林生态系统根系土壤酶活性研究

倪彬, 张健, 冯茂松, 刘洋   

  1. 四川农业大学 林学园艺学院, 四川 雅安 625014
  • 收稿日期:2007-03-22 出版日期:2007-09-30 发布日期:2017-03-04
  • 基金资助:
    国家"十一五"重大科技支撑项目:长江中上游西南山区退化生态系统恢复与重建技术示范研究(2006BAC01A11)。

Study on the Rhizosphere Soil Enzyme Activities in Eucalyptus grandis Plantation Ecosystem

NI Bin, ZHANG Jian, FENG Mao-song, LIU Yang   

  1. College of Forestry and Horticulture, Sichuan Agricultural University, Yaan 625014, Sichuan, China
  • Received:2007-03-22 Online:2007-09-30 Published:2017-03-04

摘要: 试验研究了洪雅县巨桉人工林生态系统根系与根外土壤酶活性,结果表明:巨桉人工林具有较强的根系效应,R/S值处于1~2间;3种酶活性季节变化规律明显,蔗糖酶、脲酶活性夏季最高,春季最低,过氧化氢酶活性秋季最高,春季最低;3种酶活性垂直分布规律一致,随着土层的加深而活性降低;巨桉人工林在试验区内未造成土壤肥力下降,许多因子都优于青冈次生林;根系土壤酶与根系土壤养分之间存在一定的关系,除脲酶、过氧化氢酶与速效K呈负相关外,其余生物因子与养分之间均呈正相关,且多数养分与生物因子呈极显著相关。

关键词: 巨桉人工林生态系统, 根系土壤, 土壤养分, 酶活性, 根际效应

Abstract: The experiment studied the rhizosphere and non-rhizosphere soil enzyme activity in Eucaly ptusgrandis plantation ecosystem of Hongya county. The results are as follows:Eucalyptus grandis plantation had a large rhizosphere effect, R/S is between 1 and 2;three enzymes activities had an obviously seasonal change that is, sucrase and urease activity were the highest in summer and the lowest in spring, while catalase activity was the highest in autumn and the lowest in spring;three enzymes activities had a coherently vertical distribution, the deeper the soil, the lower the enzyme activity;there was no decrease of fertility in Eucalyptus grandis plantation of Hongya county, many factors were better than Quercus acutissima;there were some relations between rhizosphere soil enzyme and rhizosphere soil fertility, except the urease and catalase were negatively correlated to available K, the other biological factors were positively correlated to nutrients factors, most of which were extremely significantly correlated to biological factors.

Key words: Eucalyptus grandis plantation ecosystem, rhizosphere soil, soil nutrient, enzyme activity, rhizosphere effect

中图分类号: 

  • S792.39