喀斯特山区不同复种指数条件下的土壤质量变化——以普定县猫洞小流域为例  

Changes of soil quality with different multiple crop index in karst hills——A case study in Maodong small basin,Puding County

作　　者：廖婧琳[1,2] 苏跃[3] 李航[4] 刘方[5] 冯泽蔚[3] 

机构地区：[1]贵州财经学院欠发达地区经济发展研究中心,贵州贵阳550004 [2]贵州财经学院旅游管理学院,贵州贵阳550004 [3]贵州省农业厅,贵州贵阳550001 [4]西南大学资源环境学院,重庆400716 [5]贵州大学环境与资源研究所,贵州贵阳550003

出　　处：《中国岩溶》2009年第3期308-312,328,共6页Carsologica Sinica

基　　金：国家重点基础研究(973)项目(2006CB403200);贵州财经学院人口.资源与环境经济学重点学科资助项目;贵州省高等学校人文社会科学研究基地基金项目(200506);贵州省高层次人才特助项目(TZJF-2007-10)

摘　　要：选择贵州中部喀斯特山区普定县猫洞小流域地区,通过长期受不同生产行为影响的区域(低复种旱作区、高复种旱作区、高复种复合农作区)的土壤采样分析,结果表明:喀斯特山区小流域土壤在长期不同生产行为影响下,从低复种指数旱作区、高复种指数旱作区到高复种指数复合农作区,土壤容重、粘粒含量减小,而土壤有机质、腐殖酸含量、全氮、碱解氮、速效磷、速效钾、土壤呼吸强度、脲酶、磷酸酶、蛋白酶活性含量依次增大,土壤全钾含量和过氧化氢酶活性却依次减小。聚类分析结果进一步表明:高复种复合农作区土壤保肥、保水、供肥等状况最好;而低复种旱作区土壤质量和供肥、保肥、保水等性状最差。上述结果说明,农户的不同生产行为对土壤质量有一定的影响。Selecting Maodong small basin, Puding county, as a study area, we collected and analyzed the soil sample from different farming area influenced by different and long-trem farming method,which include dryland in low multiple crop index,dry-land in high multiple crop index and composite-land in high multiple crop index. The results show,under the long-trem influence of different farming behaviors ,the soil, collected from dry-land in low multiple crop index to dry-land in high multiple crop index to composite-land in high multiple crop index, decease in hult density, clay content,total P and activities of catalaes and increase in organic matter, humic acid contents, nitogen,available nitrogen, phosphorus, potassium, sot breathe intensity and urease, phosphatase, protease active content. Cluster analysis prove that preserving ability of moisture and fertility and providing ability of fertility of the soil are best in high multiple crop index but worst in low multiple crop index. The above conclusions show that the behavior of the farmer affects the soil quality to some extent.

关 键 词：喀斯特 小流域 土壤质量 农户生产行为 

分 类 号：S158.3[农业科学—土壤学]