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| 不同品种尿素施入土壤后pH值的变化和氨气释放差异 | |
| 引用本文： | 蒋朝晖,曾清如,皮荷杰,毛小云,廖宗文.不同品种尿素施入土壤后pH值的变化和氨气释放差异[J].环境化学,2009,28(2). |
| 作者姓名： | 蒋朝晖 曾清如 皮荷杰 毛小云 廖宗文 |
| 作者单位： | 1. 湖南农业大学资源环境学院,长沙,410128;长沙理工大学化学与生物工程学院,长沙,410004 2. 湖南农业大学资源环境学院,长沙,410128 3. 华南农业大学资源环境学院,广州,510642 |
| 摘 要： | 通过室内模拟研究了4种尿素(普通尿素、保水型控释尿素、德国缓释尿素、矿物改性包膜尿素)施入土壤后pH值的变化和氨气释放的差异.结果表明,施入德国缓释尿素pH值下降速度最慢,但氨气挥发量最多,五周内在冲积菜园土中为25.65%,红菜园土中为16.68%.施入矿物改性包膜尿素pH值下降最快,但氨气挥发量最少,五周内在冲积菜园土中为8.07%,红菜园土为5.19%.这是由于德国缓释尿素中含有双氰胺(DCD),抑制硝化反应,因此,pH值下降缓慢,氨气挥发量大.矿物改性包膜尿素外层为磷矿粉,能缓解尿素的溶解,降低氮的释放,减少氨气挥发. |
| 关 键 词： | 尿素 氨 土壤 |
CHANGE OF pH AND VOLATILIZATION OF AMMONIA BY FERTILIZING DIFFERENT TYPES OF UREA IN SOIL |
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| JIANG Zhao-hui,ZENG Qing-ru,PI He-jie,MAO Xiao-yun,LIAO Zong-wen.CHANGE OF pH AND VOLATILIZATION OF AMMONIA BY FERTILIZING DIFFERENT TYPES OF UREA IN SOIL[J].Environmental Chemistry,2009,28(2). | |
| Authors: | JIANG Zhao-hui ZENG Qing-ru PI He-jie MAO Xiao-yun LIAO Zong-wen |
| Institution: | 1College of Resources and Environment;Hunan Agricultural University;Changsha;410128;China;2School of Chemical and Biological Engineer;Changsha University of Science and Technology;410004;3College of Nature Resources and Environment;South China Agricultural University;Guangzhou;510642;China |
| Abstract: | This paper studied about change of pH and volatilization of ammonia by fertilizing four different types of urea(general urea,keep water controlled-release urea,Germany slow-release urea,mineral coated urea).The results showed that the fallen rate of pH by Germany slow-release urea was the slowest while the amount of ammonia volatilization was the biggest,in the five weeks the amount was 25.65% in alluvial vegetable garden soil,16.68% in red vegetable garden soil.The fallen rate of pH by fertilizing mineral ... |
| Keywords: | urea ammonia soil |
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