CAJ | 학술논문

为了了解不同氮磷肥对褐土吸附土霉素的影响,将 OECD Guideline 106作为参考方法,并选用 NH4Cl,CO(NH2)2,Ca(NO3)2及Ca(H2PO4)2四种常用的农业化肥作为影响因素,进行等温吸附试验.结果表明,氮磷肥添加过后,吸附等温线依然可用Langmuir和Freundlich方程拟合(P<0.01).在添加4种化肥情况下,土壤悬浮液的 pH 值及阳离子强度都在一定程度上发生了变化,相比于对照,pH 值变化范围为0.04~0.24,褐土对土霉素的饱和吸附量(Qmax)顺序为： Ca(NO3)2>NH4Cl>CK>Ca(H2PO4)2>CO(NH2)2,而在吸附率和分配系数方面影响最大的则是CO(NH2)2,数值平均下降了2.43%,13.19%,最小的则是Ca(H2PO4)2,其值平均下降了1.75%,9.59%.
위료료해불동담린비대갈토흡부토매소적영향,장 OECD Guideline 106작위삼고방법,병선용 NH4Cl,CO(NH2)2,Ca(NO3)2급Ca(H2PO4)2사충상용적농업화비작위영향인소,진행등온흡부시험.결과표명,담린비첨가과후,흡부등온선의연가용Langmuir화Freundlich방정의합(P<0.01).재첨가4충화비정황하,토양현부액적 pH 치급양리자강도도재일정정도상발생료변화,상비우대조,pH 치변화범위위0.04~0.24,갈토대토매소적포화흡부량(Qmax)순서위： Ca(NO3)2>NH4Cl>CK>Ca(H2PO4)2>CO(NH2)2,이재흡부솔화분배계수방면영향최대적칙시CO(NH2)2,수치평균하강료2.43%,13.19%,최소적칙시Ca(H2PO4)2,기치평균하강료1.75%,9.59%.
The OECD Guideline 106 was selected as reference method, in purpose of investigating the effect of nitrogen-containing and phosphorus-containing fertilizers on adsorption of OTC in cinnamon soil. In addition, ammonium chloride, urea, calcium nitrate and triple superphosphate were employed as treatment factors. The isothermal adsorption test showed that data could be fitted very well (P<0.01) in the presence of fertilizers. The pH and cationic strength of soil suspension have undergone a certain degree of change and the pH ranged from 0.04 to 0.24. The adsorption capacity order was as followed:Ca(NO3)2>NH4Cl>CK>Ca(H2PO4)2>CO(NH2)2. In terms of adsorption rate and distribution coefficient, CO(NH2)2 gave rise to the most significant influence which decreased by 2.43%, 13.19%averagely, and Ca(H2PO4)2 led to the least significant influence which lowered by 1.75%, 9.59%.