| 土壤脲酶与汞关系中的作物效应 |
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| 引用本文： | 和文祥,朱铭莪,张一平.土壤脲酶与汞关系中的作物效应[J].西北农林科技大学学报(社会科学版),2002,30(2):68-72. |
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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： | 1. 西北农林科技大学,资源环境学院,陕西,杨陵,712100中国科学院,南京土壤研究所,江苏,南京,210008
2. 西北农林科技大学,资源环境学院,陕西,杨陵,712100 |
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| 基金项目： | 国家自然科学基金资助项目 (3 93 70 14 8)，西北农林科技大学青年基金资助项目 |
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| 摘 要： | 通过人工模拟方法动态研究了汞与土壤脲酶关系中的作物效应。结果表明 ,在土壤—植物体系中 ,汞对土壤脲酶和作物根系活力具有明显的抑制作用 ,且土壤脲酶和根系活力对汞的应答是一致的 ;根际土壤脲酶活性高于非根际 ,反映出作物的生长可增加酶活性水平 ,且种植作物在一定程度上可减轻汞对脲酶的抑制作用 ,表明根际土壤生物活性较强 ,是汞污染敏感的区域。
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| 关 键 词： | 作物效应 土壤脲酶 汞 环境保护 |
| 文章编号： | 1000-2782(2002)02-0068-05 |
| 收稿时间： | 2001/4/23 0:00:00 |
| 修稿时间： | 2001年4月23日 |
Crop effect on the relationship between soil urease activity and mercury |
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| HE Wen xiang ,ZHU Ming e ,ZHANG Yi ping.Crop effect on the relationship between soil urease activity and mercury[J].Journal of Northwest Sci-Tech Univ of Agr and,2002,30(2):68-72. |
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| Authors: | HE Wen xiang ZHU Ming e ZHANG Yi ping |
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| Institution: | HE Wen xiang 1,2,ZHU Ming e 1,ZHANG Yi ping 1 |
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| Abstract: | It is important to study the relationship among soil enzyme,crop and mercury,because mercury has remarkable influence not only on soil quality,but also on the product and quality of crops.Their relationship is investigated by dynamic idea and simulated method.The results show as the followings:Hg obviously inhibited soil urease activity and crop root-activity under soil-crop agricultural system;Crop could enhance soil urease activity and reduce Hg's inhibition because the urease activity of rhizosphere soil is higher than that of non-rhizosphere soil.Rhizosphere is a region that is a zone of the highest bioactivity and sensitivest to Hg. |
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| Keywords: | crop effect soil urease mercury environment protection |
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