| 坡缕石包膜对尿素氮行为的影响 |
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| 引用本文： | 刘学周,蔺海明,王 蒂,邱黛玉,金 浩,张鹏飞.坡缕石包膜对尿素氮行为的影响[J].中国生态农业学报,2009,17(3):443-447. |
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| 作者姓名： | 刘学周 蔺海明 王 蒂 邱黛玉 金 浩 张鹏飞 |
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| 作者单位： | 甘肃农业大学,兰州,730070 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金，国家科技支撑计划 |
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| 摘 要： | 采用静态吸收和土柱淋溶试验方法,分析对比了3种不同用量坡缕石包膜尿素与普通尿素施入土壤后对尿素氮行为的影响,结果表明:在土壤中施用坡缕石包膜尿素较普通尿素减少10.38%～26.24%的氨挥发损失,减少5.88%～27.74%的氮素(NO3--N+NH4+-N)淋溶损失,20%的坡缕石包膜尿素能显著提高土柱土壤NH4+-N含量,3种坡缕石包膜尿素都能极显著提高土柱土壤NO3--N含量.坡缕石包膜后能减少尿素氨的挥发,降低NH4+-N和NO3--N的淋失,提高土壤NH4+-N和NO3--N含量,以20%的坡缕石包膜尿素的综合生态效应最好.
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| 关 键 词： | 坡缕石 包膜尿素 氮行为 氮淋溶 氮挥发 生态效应 |
| 收稿时间： | 2008/11/9 0:00:00 |
| 修稿时间： | 2009/1/10 0:00:00 |
Effect of palygorskite coating on various forms of nitrogen urea |
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| LIU Xue-Zhou,LIN Hai-Ming,WANG Di,QIU Dai-Yu,JIN Hao and ZHANG Peng-Fei.Effect of palygorskite coating on various forms of nitrogen urea[J].Chinese Journal of Eco-Agriculture,2009,17(3):443-447. |
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| Authors: | LIU Xue-Zhou LIN Hai-Ming WANG Di QIU Dai-Yu JIN Hao and ZHANG Peng-Fei |
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| Institution: | Gansu Agricultural University, Lanzhou 730070, China;Gansu Agricultural University, Lanzhou 730070, China;Gansu Agricultural University, Lanzhou 730070, China;Gansu Agricultural University, Lanzhou 730070, China;Gansu Agricultural University, Lanzhou 730070, China;Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: | Static absorption and soil column leaching methods were used to study and analyze the difference of N form between from applied urea coated with three different thicknesses of palygorskite and uncoated urea. The results show that coating urea with palygorskite decreases ammonia volatilization by 10.38%~26.24% compared with uncoated urea. Coating also reduces N (NO3--N+N+NH4+) leaching by 5.88%~27.74%. With 20% palygorskite coating treatment, urea significantly increases the NH4+-N in column soil. The three different palygorskite coatings lead to a significant increase in NO3--N in column soil. Urea coated with palygorskite decreases ammonia volatilization and N (NO3--N+NH4+-N) leaching, increases NH4+-N and NO3--N in the soil. More importantly, palygorskite coating of 20% induces optimal ecological conditions. |
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| Keywords: | Palygorskite Coatet urea Nitrogen form Nitrogen leaching Aammonia volatilization Ecological condition |
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