| 长期施肥对不同有机质水平黑土蛋白酶活性及氮素的影响 |
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| 引用本文： | 徐欣,郑利远,周珂,张锦源,侯萌,陈一民,隋跃宇,焦晓光.长期施肥对不同有机质水平黑土蛋白酶活性及氮素的影响[J].中国土壤与肥料,2019(1):44-48. |
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| 作者姓名： | 徐欣 郑利远 周珂 张锦源 侯萌 陈一民 隋跃宇 焦晓光 |
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| 作者单位： | 黑龙江大学农业资源与环境学院;东北林业大学图书馆;中国科学院东北地理与农业生态研究所 |
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| 基金项目： | 基金项目:国家自然科学基金(项目批准号:41471209)；中国科学院战略先导科技专项(B类)(XDB15030201)。 |
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| 摘 要： | 为了探讨长期施肥对不同有机质含量农田黑土酶活性及养分的影响。本研究以黑土生产力长期定位试验为平台,选取5个不同有机质含量农田黑土为研究对象,对比分析长期施用化肥对农田黑土土壤蛋白酶活性及相关土壤养分的影响。结果表明:5种不同有机质含量农田黑土蛋白酶活性随有机质含量的增加而递增;与长期无肥处理相比,施用化肥显著提高了农田黑土蛋白酶的活性。不同施肥处理间土壤全氮随有机质含量的降低而降低,铵态氮、硝态氮与全氮含量变化一致。相关分析显示,土壤蛋白酶活性与土壤全氮、铵态氮、硝态氮均呈显著的正相关关系(P0.05)。土壤蛋白酶活性可以作为长期施用化肥农田黑土质量评价的灵敏指标。
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| 关 键 词： | 长期施肥 农田黑土 蛋白酶活性 氮素 相关性 |
| 收稿时间： | 2018/4/6 0:00:00 |
Effects of long-term fertilization on protease activity and nitrogen in arable mollisols of different organic matter contents |
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| XU Xin,ZHENG Li-yuan,ZHOU Ke,ZHANG Jin-yuan,HOU Meng,CHEN Yi-min,SUI Yue-yu and JIAO Xiao-guang.Effects of long-term fertilization on protease activity and nitrogen in arable mollisols of different organic matter contents[J].Soil and Fertilizer Sciences in China,2019(1):44-48. |
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| Authors: | XU Xin ZHENG Li-yuan ZHOU Ke ZHANG Jin-yuan HOU Meng CHEN Yi-min SUI Yue-yu and JIAO Xiao-guang |
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| Institution: | College of Agricultural Resources and Environment,Heilong jiang University,Harbin Heilong jiang 150080,The Library of Northeast Forestry University,Harbin Heilongjiang150040,College of Agricultural Resources and Environment,Heilong jiang University,Harbin Heilong jiang 150080,Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Harbin Heilong jiang 150081,Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Harbin Heilong jiang 150081,Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Harbin Heilong jiang 150081,Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Harbin Heilong jiang 150081 and College of Agricultural Resources and Environment,Heilong jiang University,Harbin Heilong jiang 150080 |
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| Abstract: | To discuss the effects of long-term chemical fertilizer application on enzyme activity and soil nutrients in arablemollisols of different organic matter contents,five organic matter contents were compared and analyzed based on the long-term experiment of mollisol productivity.The results showed that protease activities in mollisols increased with the increasingorganic mattercontents.Compared with non-fertilizationtreatment,the application of chemical fertilizer significantlyincreased protease activities in mollisols.Soil total nitrogen decreased with the decreasing organic matter contents in bothfertilizationtreatments,and the changes of available nitrogen was consistent with total nitrogencontents.Correlation analysisshowed that soil protease activities were significantly correlated with soil totalnitrogen,ammonium nitrogen and nitratenitrogen( P<0.05).Soil protease activity can be used as a sensitive indicator in evaluating the quality of mollisols under long-term application of chemical fertilizers. |
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