桉农间作系统对土壤性质变化的影响研究  

Study on the charaterstic of soil properties in the crop-eucalyptus interplanting system

作　　者：林培群[1,2] 余雪标[1,2] 刘苇[2] 刘宁[2] 李叶[2] 

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]海南大学环境与植物保护学院,海南儋州571737

出　　处：《广东农业科学》2010年第1期24-27,共4页Guangdong Agricultural Sciences

基　　金：海南省重点科技项目(05102);国家科技支撑计划课题(2006BAD32B02);金光APP合作项目;海南大学重点项目(hd09xm53)

摘　　要：研究了桉农间作对土壤性质的影响,结果表明:桉农间作能较好地改善林地土壤物理性质和化学性质。与未间作农作物的按林地相比,间作柱花草的间作地各层土壤平均容重、非毛管孔隙度、非毛管孔隙度∕毛管孔隙度分别降低了5.93%、55.30%、62.77%,土壤毛管含水量、总孔隙度、毛管孔隙度分别提高了33.08%、8.80%、29.93%,土壤全N、全P、全K和有机质含量分别提高了34.76%、23.20%、9.52%、54.20%;间作甘蔗后,无论间作带还是桉树窄行,土壤养分都明显提高,其中桉树窄行和间作带的土壤有机质含量分别提高了49.08%和36.69%;而间作木薯后,间作带及桉树窄行的土壤有机质含量分别增加了49.23%、37.88%。The results showed that interplanting or rotating with crops,benefited to ameliorate the soil physical properties and chemical properies. Interplanting Stylosanthes guianensis cv. Reyan NO.2, the bulk density of soil decreased 5.93%, capillary soil moisture, total porosity and capillary porosity increased 33.08%, 8.80%, 29.93%. The non-capillary porosity, ratio of non-capillary porosity and capillary porosity decreased 55.30% and 62.77%. The concentration of total N, P, K and organic matter increased 34.76%, 23.20%, 9.52%, 54.20% after interplanting by crops compared with the comparison. Interplanting with sugarcane, the soil nutrient of interplanting land and narrow row were higher than the comparison obviously. And the organic matter of the narrow row and interplanting land increased 49.08% and 36.69% compared with the comparison. The organic matter of the interplanting land and narrow row had increased 49.：23% and 37.88% compared with the comparison after interplanting cassava.

关 键 词：桉树人工林 桉农间作 土壤性质 

分 类 号：S157.43[农业科学—土壤学]