桉树人工林林下间作绿肥对土壤的改良效应研究  

Study on the Physical and Chemical Properties of Soil Improved by Green manures Interplanting Under the Eucalyptus Plantation

作　　者：刘苇[1] 余雪标[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

出　　处：《热带林业》2008年第2期16-20,共5页Tropical Forestry

基　　金：海南省科技重点项目(05102);金光公司(APP)合作项目的部分内容

摘　　要：针对桉树人工林地力衰退问题,通过在桉树人工林下间作绿肥作物,对绿肥作物间作后土壤理化性状进行测定,并与对照地(杂草地)土壤和桉树1.3m树行间土壤比较,结果表明:桉树人工林下间作柱花草后,土壤容重比对照降低3.411%,毛管含水量、总孔隙度、毛管孔隙度分别比对照提高4.485%、1.984%、7.675%,非毛管孔隙度、非毛管孔隙度/毛管孔隙度比值分别比对照降低5.788%、0.245%,土壤pH、有机质、速效P、速效K、全N、全P、全K含量分别比对照提高了4.025%、32.051%、9.539%、46.296%、42.315%、29.567%、50.615%,土壤理化性状得到有效改良。Because of pure Eucalyptus plantation conntinuous - planting, some disadvantages appeared, just as soil fertility decline increase. The study topic was green manures which interplanted under Eucalyptus plantation, researchs were conducted according the physics and chemistry properties of soil change after green manures planted. The result showed that： In comparison with contrast, soil bulk density of soil which interplanting Stylosanthes guianensis cv. Reyan NO. 2 decreased 3.411%, capillary soil moisture, total porosity, capillary porosity increased 4.485%, 1.984%, 7.675%, non- capillary porosity, ratio of non - capillary porosity and capillary porosity decreased 5.788% , 0.245%. PH, organic matter, quick-acting P, K, total N, P, K of soil increase 4.025%, 32.051%, 9.539%, 46.296%, 42.315% , 29.567%, 50.615%. Interplanting Stylosanthes guianensis cv. Reyan NO.2, the effective permeability and the fertilizer of soil in- creased, the physical and chemical properties of soil improved effectively.

关 键 词：桉树人工林 间作 绿肥作物 土壤理化性状 改良 

分 类 号：S792.39[农业科学—林木遗传育种] S714[农业科学—林学]