| 尿素涂层对土壤渗出液NO_3~--N和NH_4~+-N的影响 |
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| 引用本文： | 张玉玲,张玉龙,王春枝,党秀丽,刘启. 尿素涂层对土壤渗出液NO_3~--N和NH_4~+-N的影响[J]. 土壤通报, 2005, 36(5): 704-707 |
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| 作者姓名： | 张玉玲 张玉龙 王春枝 党秀丽 刘启 |
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| 作者单位： | 沈阳农业大学,土地与环境学院,辽宁,沈阳,110161 |
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| 基金项目： | 中国科学院沈阳生态试验站资助项目 |
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| 摘 要： | 采用盆栽试验方法,研究尿素涂层后施用于水田土壤其渗出液NO3--N和NH4+-N含量的变化情况。研究结果表明:与未涂层尿素相比,施用尿素涂层可使氮素释放变得平缓,土壤渗出液中NH4+-N和NO3--N浓度明显降低,有利于水稻生长对氮素的吸收利用;在等氮量条件下,施用涂层尿素处理的土壤渗出液中的NH4+-N浓度明显低于未涂层尿素处理,且尿素用量越低这一差异越明显,而土壤渗出液中的NO3--N浓度施入土壤后前10天涂层尿素低于未涂层尿素处理,而至第18天则表现出高于未涂层尿素处理的趋势;涂层处理土壤渗出液NO3--N和NH4+-N之和大都小于未涂层处理。
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| 关 键 词： | 涂层尿素 水田土壤 盆栽 NO3--N NH4+-N |
| 文章编号： | 0564-3945(2005)05-0704-04 |
| 修稿时间： | 2004-05-18 |
Effect of Coated Urea on NO3--N and NH4+-N in Soil Exduation |
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| ZHANG Yu-ling,ZHANG Yu-long,WANG Chun-zhi,DANG Xiu-li,LIU Qi. Effect of Coated Urea on NO3--N and NH4+-N in Soil Exduation[J]. Chinese Journal of Soil Science, 2005, 36(5): 704-707 |
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| Authors: | ZHANG Yu-ling ZHANG Yu-long WANG Chun-zhi DANG Xiu-li LIU Qi |
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| Abstract: | NO_3~——N and NH_4~+-N concentration change in the soil exduation are studied in paddy field.The results of a pot experiment show that nitrogen release are mild by the coated urea compared with the normal urea.NH_4~+-N and NO_3~——N concentration of the soil exduation are lower than that of the normal urea treatment.Coated urea is benefit to absorb nitrogen.NH_4~+-N concentration of the soil exduation is lower than that of the normal urea treatment.NO_3~——N concentration is lower within 10 days after using the coated urea but higher after 18 days compared with the normal urea.The total amount of NO_3~——N and NH_4~+-N are mostly lower than that of the normal urea treatment. |
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| Keywords: | Coated urea Paddy soil Pot experiment NO_3~--N NH_4~ -N |
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