摘要
以黄土高原旱塬区黑垆土和黄绵土为材料,研究了不同土壤对硝态氮肥、铵态氮肥、酰胺态氮肥的吸持情况。结果表明黑垆土对NO-3-N、NH+4-N和CO(NH2)2的吸持力分别为:4.835mgN/100g、4.960mgN/100g、4.980mgN/100g;黄绵土对NO-3-N、NH+4-N和CO(NH2)2的吸持力分别为:4.803mgN/100g、4.947mgN/100g、4.975mgN/100g,且黑垆土对氮肥的吸持力总体高于黄绵土对氮肥的吸持力。对于同一种土壤来说,氮肥的吸附力大小为:CO(NH2)2>NH+4-N>NO-3-N.
Take the Black loam and Loess soil from The Loess Plateau as research materials , this paper studies the different soils ’ adsorption capacity of the nitrate nitrogen ,ammonium nitrogen ,amide nitrogen fertilizer .It shows that the adsorption capacity of Black loam to NO -3 -N, NH4＋-N and the CO （ NH2 ） 2 is 4.835mgN/100g,4.960 mgN/100g and 4.980mgN/100g respectively;the adsorption capacity of the Lo-ess soil to NO-3 -N, NH4＋-N and CO （ NH2 ）2 is 4.803mgN/100g, 4.947mgN /100g and 4.975mgN/100g.It points out that the nitrogen adsorption of the Black loam is greater than the overall capacity of the Loess soil .For the same soil , nitrogen adsorption is：CO （ NH2 ） 2 ＆gt;NH4＋-N＆gt;NO-3 -N.
出处
《陇东学院学报》
2014年第3期26-28,共3页
Journal of Longdong University
关键词
黑垆土
黄绵土
土壤吸附力
Black loam
Loess soil
soil adsorption capacity
