| 陕西几种主要土壤脲酶热力学特征初探 |
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| 引用本文： | 和文祥,朱铭莪,张一平.陕西几种主要土壤脲酶热力学特征初探[J].西北农林科技大学学报(社会科学版),2001,29(1):51-54. |
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| 作者姓名： | 和文祥 朱铭莪 张一平 |
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| 作者单位： | 西北农林科技大学 资源环境学院, |
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| 基金项目： | 国家教委博士点基金资助项目(900703) |
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| 摘 要： | 计算陕西省 7种土壤 19个不同肥力土样的脲酶热力学参数结果显示 ,土壤脲酶的ΔG≠ >0、Δ H≠>0、ΔS≠ <0 ,反映出酶促反应不能自发进行 ,必须由外界供给能量 ,才能克服位阻上的障碍 ;除水稻土外 ,其余土样脲酶的Δ G≠ 值低肥力土样大于高肥力 ,Δ H≠ 和ΔS≠ 值变化不明显 ,相关分析等揭示出土样脲酶ΔG≠ 与土壤肥力中的有机质呈显著相关 ,各热力学参数的平均值也呈现出一致的规律性变化
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| 关 键 词： | 土壤脲酶 热力学参数 土壤肥力 |
| 文章编号： | 1000-2782(2001)01-0051-04 |
| 收稿时间： | 2000/3/28 0:00:00 |
| 修稿时间： | 2000年3月28日 |
Study on soil urease thermodynamic characteristics of major soils in Shaanxi |
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| WANG Hui,SUN Dao jie,SHI Xiao wei,MIN Dong hong,LI Xue jun.Study on soil urease thermodynamic characteristics of major soils in Shaanxi[J].Journal of Northwest Sci-Tech Univ of Agr and,2001,29(1):51-54. |
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| Authors: | WANG Hui SUN Dao jie SHI Xiao wei MIN Dong hong LI Xue jun |
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| Institution: | (College of Resources and Environment,Northwest Science and Technology University of Agriculture and Forestry,Yangling,Shaanxi 712100,China) |
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| Abstract: | The urease thermodynamic parameters were analyzed in nineteen samples of seven soil types in Shaanxi. The results showed as follows:The soil urease ΔG≠＞0,ΔH≠＞0, ΔS≠＜0 showed that it was not possible for soil urease reaction until energy imposed;the higher fertile samples urease ΔG≠ were higher than the lower samples except paddy soil;urease ΔH≠，ΔS≠ values did not observably vary among soils tested;ΔG≠ was remarkable correlation with soil fertility by correlation analyses and the average of all thermod ynamic parameters varied by the same law. |
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| Keywords: | soil urease thermodynamic parameter soil fertility |
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