不同土地利用方式下土壤理化性质及酶活性的特征  

Characteristics of Different Land Use Types on Soil Physiochemical Properties and Soil Enzymes Activity

作　　者：陈模芳[1,2] 赵熙洲[2] 孔维勋 丁波 彭雪梅 CHEN Mofang;ZHAO Xizhou;KONG Weixun;DING Bo;PENG Xuemei(College of Biological and Agricultural Science and Technology,Zunyi Normal College,Zunyi,Guizhou 563006;Forestry College,Guizhou University,Guiyang,Guizhou 550025;Guizhou State Owned Zha-Zuo Forest Farm,Guiyang,Guizhou 550102;School of Biological Sciences,Guizhou Education University,Guiyang,Guizhou 550018)

机构地区：[1]遵义师范学院生物与农业科技学院,贵州遵义563006 [2]贵州大学林学院,贵州贵阳550025 [3]贵州省国有扎佐林场,贵州贵阳550102 [4]贵州师范学院生物科学学院,贵州贵阳550018

出　　处：《北方园艺》2023年第7期87-94,共8页Northern Horticulture

基　　金：贵州省农业科技攻关资助项目(黔科合支撑[2017]2520-2);贵州省教育厅青年人才成长资助项目(黔教合KY字[2019]120);贵州师范学院博士资助项目(2019BS003);贵州师范学院国家科技部和国家自然科学基金奖励补助资助项目(黔科合平台人才[2018]5778-06);贵州省自然科学基金资助项目(黔科合J字[2019]1251号)。

摘　　要：以贵州省凤冈县境内的撂荒地、农耕地、马尾松中龄林地、针阔混交林地、马尾松成熟林地5种土地利用类型的土壤为试材,采用标准样地布置法,研究了不同土地利用方式对土壤理化性质及土壤酶活性的影响,以期为喀斯特地区的土地利用提供参考依据。结果表明:1)不同土地利用方式下土壤的物理结构存在显著差异(P<0.05);农耕地的全氮、全磷、碱解氮显著高于其它土地利用类型(P<0.05),针阔混交林地的有机质明显高于其它土地利用类型;2)马尾松成熟林地的土壤纤维素酶、酸性磷酸酶、β-葡萄糖苷酶均高于其它土地利用类型;针阔混交林地的土壤蔗糖酶活性显著高于其它土地利用类型(P<0.05);脲酶在农耕地中的活性显著高于其它土地利用类型(P<0.05)。3)Pearson相关性分析表明,土壤有机质与土壤全氮、碱解氮、全磷、蔗糖酶、酸性磷酸酶、脲酶、β-葡萄糖苷酶、多酚氧化酶间均呈极显著正相关(P<0.01),表明有机质的积累有助于改善土壤结构及提高土壤酶活性。The soil from Fenggang county,Guizhou Province for abandoned land,farmland,middle aged forest of Pinus massoniana,conifer-broadleaf forest,and Mature forest of Pinus massoniana of five land use types were used as test material.The effects of different land use patterns on soil physical and chemical properties and soil enzyme activities were studied by using the standard plot layout method,in order to provide reference for land use in Karst areas.The results showed that,1)there was significant differences in soil physical structure under different land use types(P<0.05).The total nitrogen,total phosphorus and alkali hydrolyzable nitrogen of farmland were significantly higher than those of other land use types(P<0.05).The organic matter content of conifer-broadleaf forest was significantly higher than that of other land use types.2)Soil cellulase,acid phosphatase andβ-Glucosidase in Mature forest of Pinus massoniana were higher than other land use types.The soil invertase activity of conifer-broadleaf forest was significantly higher than other land use types(P<0.05).The activity of urease in Farmland was significantly higher than other land use types(P<0.05).3)Pearson correlation analysis showed that there as an extremely significant positive correlation between soil organic matter content and soil total nitrogen,alkali hydrolyzable nitrogen,total phosphorus,sucrase,acid phosphatase,urease,β-Glucosidase,polyphenol oxidase(P<0.01),indicating that the accumulation of organic matter content was helpful to improve soil structure and enzyme activity.

关 键 词：土地利用方式 物理性质 养分 土壤酶 

分 类 号：S154.36[农业科学—土壤学]