| 硼酸对土壤脲酶动力学参数的影响 |
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| 引用本文： | 李昌满,许明惠. 硼酸对土壤脲酶动力学参数的影响[J]. 西南师范大学学报(自然科学版), 2010, 35(2) |
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| 作者姓名： | 李昌满 许明惠 |
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| 作者单位： | 1. 长江师范学院,生命科学与技术学院,重庆,涪陵,408100
2. 重庆工贸职业技术学院,重庆,涪陵,408000 |
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| 基金项目： | 重庆市涪陵区科委科技项目 |
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| 摘 要： | 采用靛酚蓝比色法研究了硼酸对灰棕紫泥土脲酶动力学参数的影响.结果表明,硼酸对灰棕紫泥土脲酶酶促反应的抑制能力随硼酸浓度的增大而增强,硼酸的加入,降低了V0和Vmax值,而对Km值没有明显影响,揭示出硼酸对土壤脲酶的作用类型表现为非竞争性抑制作用;由于硼是作物必需营养元素,不会造成土壤污染,因此可作为安全有效的尿素缓释剂使用.
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| 关 键 词： | 土壤脲酶 动力学参数 硼酸 |
Effect of Boric Acid Treatment on Kinetic Parameters of Soil Urease |
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| LI Chang-man,XU Ming-hui. Effect of Boric Acid Treatment on Kinetic Parameters of Soil Urease[J]. Journal of southwest china normal university(natural science edition), 2010, 35(2) |
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| Authors: | LI Chang-man XU Ming-hui |
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| Abstract: | The article researches the effect of boric acid on grey-brown purple soil urease with indophenol blue colorimetry. The result shows: the inhibiting ability of boric acid on urease reaction of grey-brown purple soil increased with the increase of boric acid concentration. Boric acid treatment makes V_0 and V_(max) value decrease, but no significant influence on Km value. It indicated that boric acid expressed noncompeti-tive inhibition on soil urease. As the essential nutrition element of plant, boron will not cause soil pollution, and it can be used to the urea slow-release inhibitor safely and effectively. |
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| Keywords: | soil urease kinetic parameters boric acid |
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