长期培肥黑土脲酶活性动态变化及其影响因素

应用生态学报 ›› 2003, Vol. ›› Issue (12): 2208-2212.

长期培肥黑土脲酶活性动态变化及其影响因素

李东坡¹, 武志杰¹, 陈利军¹, 杨杰², 朱平³, 任军³, 彭畅³, 高红军³

1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
2. 沈阳师范大学, 沈阳 100034;
3. 吉林省农业科学院土壤肥料研究所, 公主岭 136100

收稿日期:2003-05-22 修回日期:2003-06-23 出版日期:2003-12-15
通讯作者: 李东坡,男,1964年生,在读博士,助理研究员,主要从事土壤生态、生态农业及绿色食品研究,发表论文多篇.E-mail:lidp1964@sohu.com.
基金资助:
国家重点基础研究发展规划项目(G199901180804);中国科学院沈阳应用生态研究所知识创新工程重大资助项目(SCXZD010402)

Dynamics of urease activity in a long-term fertilized black soil and its affecting factors

LI Dongpo¹, WU Zhijie¹, CHEN Lijun¹, YANG Jie², ZHU Ping³, REN Jun³, PENG Chang³, GAO Hongjun³

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Shenyang Normal University, Shenyang 110034, China;
3. Institute of Soil and Fertilizer, Jilin Agricultural Academy of Sciences, Gongzhuling 136100, China

Received:2003-05-22 Revised:2003-06-23 Online:2003-12-15

摘要/Abstract

摘要： 以东北典型黑土区长期(自1980年)不同培肥试验地土壤为研究对象,采用两种不同量有机肥、化肥和不施肥4个处理,对土壤脲酶在作物生长季的动态变化进行研究.结果表明,施用有机肥,生长季黑土脲酶活性明显高于施用化肥和不施肥,其生长季脲酶保护容量在160mg·kg^-1·h^-1以上,季节性变化平稳,保持土壤脲酶免遭变性、免遭分解作用显著.脲酶活性的动态变化与绝大多数土壤生物、理化特性指标的动态变化没有明显的相关性;与土壤生物、理化特性,植物N、P、K有极显著的正相关关系;与土壤含水量、籽粒粗蛋白含量呈显著正相关关系.

Abstract: The effect of long term fertilization on the urease activity in a typical black soil in Northeastern China was examined in this paper. The soil has been fertilized since 1980, and the dynamics of its urease activity was monitored during crop growth season. The results showed that a significant difference in soil urease activity was found at each growth stage between soils treated by different fertilizations. In farmyard manure treated soil, the urease activity was > 160 mg穔g^-1 穐^-1 and with a low seasonal fluctuations. The soil urease activity had a significant positive correlation with soil biological, physical and chemical properties, and the N, Pand Kcontents in plants (P<0.01), and with soil moisture content and grain crude protein (P<0.05).

中图分类号:

S154.2

李东坡, 武志杰, 陈利军, 杨杰, 朱平, 任军, 彭畅, 高红军. 长期培肥黑土脲酶活性动态变化及其影响因素[J]. 应用生态学报, 2003, (12): 2208-2212.

LI Dongpo, WU Zhijie, CHEN Lijun, YANG Jie, ZHU Ping, REN Jun, PENG Chang, GAO Hongjun. Dynamics of urease activity in a long-term fertilized black soil and its affecting factors[J]. Chinese Journal of Applied Ecology, 2003, (12): 2208-2212.

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