长期施肥对薄层黑土酶活性及土壤肥力的影响  

Effect of long-term fertilization on enzyme activities and soil fertility in the black thin-layer soil

作　　者：焦晓光[1,2] 隋跃宇[3] 魏丹[1] 

机构地区：[1]黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江省植物营养与土壤环境重点实验室,黑龙江哈尔滨150086 [2]黑龙江大学农业资源与环境学院,黑龙江哈尔滨150080 [3]中国科学院东北地理与农业生态研究所,黑龙江哈尔滨150081

出　　处：《中国土壤与肥料》2011年第1期6-9,共4页Soil and Fertilizer Sciences in China

基　　金：国家自然科学基金项目(40901147);黑龙江省杰出青年基金项目(JC200622);黑龙江省博士后启动基金;黑龙江省自然基金项目(C200824);哈尔滨市科技创新人才专项(2008RFQYN126);黑龙江省教育厅项目(11531291)

摘　　要：利用29年的长期定位试验,对不同的施肥方式下薄层黑土酶活性及肥力进行了研究,探讨长期施肥对土壤酶活性及与土壤肥力的影响。结果表明,化肥与有机肥配合施用能明显提高土壤有机质、全氮、全磷、碱解氮、有效磷含量,增强土壤脲酶、磷酸酶、转化酶、过氧化氢酶、脱氢酶活性。相关分析结果显示,土壤脲酶、磷酸酶、转化酶、过氧化氢酶、脱氢酶活性与有机质、全氮、全磷、有效磷、碱解氮呈显著正相关。土壤脲酶、磷酸酶、转化酶、过氧化氢酶、脱氢酶综合活性可以反映长期施肥后薄层黑土质量的变化趋势。Soil enzyme activities and soil fertility were studied to explore the long-term fertilization on soil enzyme activities and its relationship with soil fertility on the basis of 29-years long-term site-specific experiment with different fertilization methods.The results showed that combined application of chemical fertilizers and organic manure could significantly increase the soil organic matter,total nitrogen,total phosphorus,alkali-soluble nitrogen,available phosphorus content and enhance the soil urease,phosphatase,invertase,catalase,dehydrogenase activity.The results of correlation analysis showed that soil urease,phosphatase,invertase catalase and dehydrogenase activity positively corrected with organic matter,total nitrogen,total phosphorus and alkali-soluble nitrogen significantly,and the integrated activities of soil urease,phosphatase,invertase,catalase dehydrogenase activity could reflect the changing trend of black thin-layer soil quality in the farmland after long-term fertilization.

关 键 词：薄层黑土 长期施肥 土壤酶 相关分析 土壤肥力 

分 类 号：S158[农业科学—土壤学]