CAJ | 학술논문

向白浆土各层次土壤施入不同改土物料,比较不同处理土壤对 P 的吸附解吸情况.结果表明:各土层土壤对 P的吸附量均随着平衡液浓度的增加而增加;不同土层间土壤吸附 P 量大小顺序为淀积层＞混拌层＞白浆层＞黑土层;随着平衡液浓度的增大,P 吸附的增加率递减;施 Ca 加大了土壤对 P 的吸附,其中黑土层增加220.16%,白浆层增加54.50%,淀积层增加 52.36%;而施有机肥减弱了土壤对 P 的吸附,其中黑土层降低70.16%,白浆层降低45.50%,淀积层降低55.27%.Ca 有降低土壤 P 解吸率的趋势,有机肥能大幅度地提高其解吸率.
향백장토각층차토양시입불동개토물료,비교불동처리토양대 P 적흡부해흡정황.결과표명:각토층토양대 P적흡부량균수착평형액농도적증가이증가;불동토층간토양흡부 P 량대소순서위정적층＞혼반층＞백장층＞흑토층;수착평형액농도적증대,P 흡부적증가솔체감;시 Ca 가대료토양대 P 적흡부,기중흑토층증가220.16%,백장층증가54.50%,정적층증가 52.36%;이시유궤비감약료토양대 P 적흡부,기중흑토층강저70.16%,백장층강저45.50%,정적층강저55.27%.Ca 유강저토양 P 해흡솔적추세,유궤비능대폭도지제고기해흡솔.
P adsorption and desorption of the different horizons in the albic luvisol with the different additives was studied and compared in this paper. The results showed that the amount of P adsorption by the soil increased as the concentration of the balance solution increased. P adsorption amount of different horizons was in the order of B horizon > the mixing horizon of Aw + B > Aw horizon > A horizon. The increasing rate of P adsorption amount decreased with the increase of the concentration of the balance solution. Applying Ca increased P adsorption amount, the increasing rates of A horizon, Aw horizon and B horizon were 220.16%, 54.50% and 52.36%, respectively. However, applying organic manure decreased P adsorption amount, the reducing rates of A horizon, Aw horizon and B horizon were 70.16%, 45.50% and 55.27%, respectively. P desorption rate will reduce when Ca as the additive but will increase significantly when organic manure as the additive.