施氮对砖红壤铵态氮淋失特征的影响

代文才,高明,王子芳,黄容

doi:10.13718/j.cnki.xsxb.2015.09.026

西南师范大学学报(自然科学版)

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施氮对砖红壤铵态氮淋失特征的影响

代文才,高明,王子芳,黄容. 施氮对砖红壤铵态氮淋失特征的影响[J]. 西南师范大学学报(自然科学版), 2015, 40(9). doi: 10.13718/j.cnki.xsxb.2015.09.026

引用本文:

代文才,高明,王子芳,黄容. 施氮对砖红壤铵态氮淋失特征的影响[J]. 西南师范大学学报(自然科学版), 2015, 40(9). doi: 10.13718/j.cnki.xsxb.2015.09.026

DAI Wen-cai,GAO Ming,WANG Zi-fang,HUANG Rong. On Effects of Types and Quantity of Nitrogen Fertilizer on Leaching Ammonium Nitrogen of Latosol[J]. Journal of Southwest China Normal University(Natural Science Edition), 2015, 40(9). doi: 10.13718/j.cnki.xsxb.2015.09.026

Citation:

DAI Wen-cai,GAO Ming,WANG Zi-fang,HUANG Rong. On Effects of Types and Quantity of Nitrogen Fertilizer on Leaching Ammonium Nitrogen of Latosol[J]. Journal of Southwest China Normal University(Natural Science Edition), 2015, 40(9). doi: 10.13718/j.cnki.xsxb.2015.09.026

施氮对砖红壤铵态氮淋失特征的影响

代文才,高明,王子芳,黄容

西南大学资源环境学院/重庆市三峡库区农业面源污染控制研究中心,重庆,400715

On Effects of Types and Quantity of Nitrogen Fertilizer on Leaching Ammonium Nitrogen of Latosol

DAI Wen-cai,GAO Ming,WANG Zi-fang,HUANG Rong

摘要: 以海南省海口市观澜湖采集的砖红壤为研究对象，采用室内土柱淋溶模拟试验方法，研究了不同氮肥种类及施用量对可变电荷土壤铵态氮淋失特征的影响．结果表明：①整个淋溶过程中，模拟试验各处理N H4＋淋失浓度的平均值随模拟淋溶时间的增加而增加，各处理N H4＋浓度表现大小顺序为：硫酸铵，硝酸铵，尿素，N0；而增幅却随模拟淋溶时间的增加而减小．②将硫酸铵，硝酸铵和尿素整个淋溶过程的N H4＋平均淋失浓度与施肥量做相关分析得线性方程：y＝0.0018 x＋2.1024（R2＝0.7399），y＝0.003 x＋1.2111（R2＝0.9374）和 y＝0.0042 x＋0.5657（R2＝0.9715），可得硫酸铵，硝酸铵和尿素在不同施用量下砖红壤铵态氮的淋失速率分别为0.18％，0.30％和0.42％．
- 尿素 /
- 硝酸铵 /
- 硫酸铵 /
- 铵态氮
Abstract: Taking latosol collected in Guanlan Lake of Haikou in Hainan province as subjects ,an investiga‐tion has been conducted in this paper on the influential factors through simulating column‐leach indoor and in the method of intermittent leaching .The results show that 1) the leaching process ,which took the av‐erage 3 stages of simulation test ,the NH+4 leaching concentration increased with the increasing of leaching time while the reducing growth has increased with simulated leaching time .Therefore ,the 3 stages simu‐lation test the concentration of NH +4 showed :ammonium sulfate>ammonium nitrate>urea>N0;2) am‐monium sulfate ,ammonium nitrate and urea respectively can be representation by linerar y=0 .001 8 x+2 .102 4(R2 =0 .739 9) ,y=0 .003 x+1 .211 1(R2 =0 .937 4) and y=0 .004 2 x+0 .565 7(R2 =0 .971 5) , The leaching rate of ammonium sulfate ,ammonium nitrate and urea ,however ,under different fertilization amount of Latosol ammonium nitrogen were 0 .18% ,0 .30% and 0 .42% .
- urea，ammonium nitrate，ammonium sulfate，ammonium nitrogen /

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施氮对砖红壤铵态氮淋失特征的影响

代文才,高明,王子芳,黄容

西南大学资源环境学院/重庆市三峡库区农业面源污染控制研究中心,重庆,400715

关键词:

尿素 /
硝酸铵 /
硫酸铵 /
铵态氮

摘要: 以海南省海口市观澜湖采集的砖红壤为研究对象，采用室内土柱淋溶模拟试验方法，研究了不同氮肥种类及施用量对可变电荷土壤铵态氮淋失特征的影响．结果表明：①整个淋溶过程中，模拟试验各处理N H4＋淋失浓度的平均值随模拟淋溶时间的增加而增加，各处理N H4＋浓度表现大小顺序为：硫酸铵，硝酸铵，尿素，N0；而增幅却随模拟淋溶时间的增加而减小．②将硫酸铵，硝酸铵和尿素整个淋溶过程的N H4＋平均淋失浓度与施肥量做相关分析得线性方程：y＝0.0018 x＋2.1024（R2＝0.7399），y＝0.003 x＋1.2111（R2＝0.9374）和 y＝0.0042 x＋0.5657（R2＝0.9715），可得硫酸铵，硝酸铵和尿素在不同施用量下砖红壤铵态氮的淋失速率分别为0.18％，0.30％和0.42％．

English Abstract

On Effects of Types and Quantity of Nitrogen Fertilizer on Leaching Ammonium Nitrogen of Latosol

西南大学资源环境学院/重庆市三峡库区农业面源污染控制研究中心,重庆,400715

Keywords:

尿素 /
硝酸铵 /
硫酸铵 /
铵态氮

Abstract: Taking latosol collected in Guanlan Lake of Haikou in Hainan province as subjects ,an investiga‐tion has been conducted in this paper on the influential factors through simulating column‐leach indoor and in the method of intermittent leaching .The results show that 1) the leaching process ,which took the av‐erage 3 stages of simulation test ,the NH+4 leaching concentration increased with the increasing of leaching time while the reducing growth has increased with simulated leaching time .Therefore ,the 3 stages simu‐lation test the concentration of NH +4 showed :ammonium sulfate>ammonium nitrate>urea>N0;2) am‐monium sulfate ,ammonium nitrate and urea respectively can be representation by linerar y=0 .001 8 x+2 .102 4(R2 =0 .739 9) ,y=0 .003 x+1 .211 1(R2 =0 .937 4) and y=0 .004 2 x+0 .565 7(R2 =0 .971 5) , The leaching rate of ammonium sulfate ,ammonium nitrate and urea ,however ,under different fertilization amount of Latosol ammonium nitrogen were 0 .18% ,0 .30% and 0 .42% .