CAJ | 학술논문

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％．
이해남성해구시관란호채집적전홍양위연구대상，채용실내토주림용모의시험방법，연구료불동담비충류급시용량대가변전하토양안태담림실특정적영향．결과표명：①정개림용과정중，모의시험각처리N H4＋림실농도적평균치수모의림용시간적증가이증가，각처리N H4＋농도표현대소순서위：류산안，초산안，뇨소，N0；이증폭각수모의림용시간적증가이감소．②장류산안，초산안화뇨소정개림용과정적N H4＋평균림실농도여시비량주상관분석득선성방정：y＝0.0018 x＋2.1024（R2＝0.7399），y＝0.003 x＋1.2111（R2＝0.9374）화 y＝0.0042 x＋0.5657（R2＝0.9715），가득류산안，초산안화뇨소재불동시용량하전홍양안태담적림실속솔분별위0.18％，0.30％화0.42％．
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% .