桉树-甘蔗复合经营土壤化学性状及酶活性研究  

Study on the Chemical Property of the Soil in the Composition System of Eucalyptus and Sugar Cane and Its Enzyme Activity

作　　者：刘宁[1,2] 余雪标[1] 林培群[1] 谢玉萍[1] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所,海南儋州571737 [2]海南大学农学院,海南儋州571737

出　　处：《安徽农业科学》2009年第27期13192-13195,13204,共5页Journal of Anhui Agricultural Sciences

基　　金：海南省重点科技项目(05102);金光APP合作项目;国家科技支撑计划课题之子课题(2006BAD32B02)

摘　　要：[目的]研究桉树一甘蔗复合系统土壤的化学性状及酶活性。为桉树林农复合经营提供理论参考和技术支持。[方法]以林带为对照，研究间作带不同位置土壤化学性状及酶活性的变化。[结果]结果表明，土壤化学性状及酶活性随土层深度增加而降低（土壤pH值除外），土壤养分主要集中在0～20cm土层。与林带相比，间作带（距林带3．0、4．5、6．0m处）土壤养分均有不同程度地提高；但距林带3．0m处的提高幅度较小，部分指标呈现出下降趋势，这可能与人为因素、林木根系与作物的养分竞争等原因有关。[结论]总体上，实行桉树林农复合经营，间作带土壤化学性状得到了改良，酶活性也有改善，这为下一轮伐期桉树的生长创造了有利条件。[ Objective] The theoretical reference and technical support for the operation of composition agm-forestry system of eucalyptus and sugar cane were provided through the research on the soil chemical property and enzyme activity. [ Method ] The forest fanning belt being taken as the control, the chemical property and enzyme activity at to the different soil location with inter-cropping were studied. [ Results ] The results showed that soil chemical properties and enzyme activity were increased with soil depth decreasing （ except for pH value） and soil nutrient was concentrated in the soil layer of 0 -20 cm. Compared with the CK, the nutrient of soil in intercropping areas with （3.0, 4.5 and 6. 0 m away from the forest fanning belt） was improved, but there was a little increment of nutrient in the soil of 3.0 m away from the forest farming belt and some indicators showed a downward trend, which might be related to human factors, tree root growth and competition among crops. [ Conclusion ] In general, the operation of composition agro-forestry system of eucalyptus and sugar cane could improve the chemical property and enzyme activity, which could have created the favorable conditions for the next rotation of eucalyptus growth.

关 键 词：桉树 甘蔗 林农复合系统 土壤化学性状 酶活性 

分 类 号：S718.516[农业科学—林学]