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.
出处
《安徽农业科学》
CAS
北大核心
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)
关键词
桉树
甘蔗
林农复合系统
土壤化学性状
酶活性
Eucalyptus
Sugar cane
Agro-forestry system
Soil chemical property
Enzyme activity
