| 摘要: |
| 用氨气敏电极法对塿土10年有机质定位试验中不施肥，单施化肥和玉米秸秆加化肥3种施肥处理的土壤脲酶反应动力学进行了研究。结果表明，玉米秸秆加化肥处理，土壤脲酶的Vmax，V0值均大。表明该处理的脲酶量高，酶促反应速度快。V，土壤养分含量及作物产量都是秸秆加化肥＞单施化肥＞不施肥。 |
| 关键词: 塿土，脲酶，反应动力学 |
| DOI： |
| 分类号:S147.3 |
| 基金项目:高等学校博士点基金资助项目 |
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| The Urease Kinetics in Lou soil Under Different Fertilization Conditions |
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| Abstract: |
| The urease kinetics of three treatments of fertilization(withoutfertilizer,
only with chemical fertilizer and corn stalk+chemical fertilizer) in the 10-year organic
matter fixed position experiments in Lou soil was studied using the ammonia electrode
method。The results showed that the values of Vmax and V0 in the treatment of corn stalk
+chemical fertilizer were the largest,thus indicating that anamount of urease was high,
and the urease-controlled reaction speed was fast.The V values,soil nutrient contents
and crop yields all were:corn stalk+ehemieal fertilizer>only chemical fertilizer>without fertilizer applied. |
| Key words: Lou soil,urease,reaction kinetics |
