CAJ | 학술논문

保水剂因其吸水极强．且对所吸收的水分具有高度的保持作用及反复吸水功能，成为保持土壤水分的有效途径之一。选择常用的“科翰98”、北京汉力淼、法国爱森3种类型保水剂，对保水剂在去离子水中的反复吸释水特性以及不同离子类型对保水剂反复吸释水能力的影响进行研究。结果表明：不同类型、粒径保水剂随着反复吸释水次数的增加，吸水倍率降低。保水剂反复吸释水能力顺序为：爱森〉汉力淼〉科瀚：大粒径比小粒径降幅更大。各保水剂反复吸释水特性与粒径不成线性规律变化。在反复吸释水条件下．各保水剂吸水速率均高于第1次吸水速率。随着吸释水次数的增加，保水剂凝胶达到饱和的时间提前．对于科瀚影响效应最为明显。2＋离子对保水剂的反复吸水能力影响更为显著．其次为1＋离子。Zn2＋最易使保水剂失效．KNO，对保水剂的影响在前期略大。
보수제인기흡수겁강．차대소흡수적수분구유고도적보지작용급반복흡수공능，성위보지토양수분적유효도경지일。선택상용적“과한98”、북경한력묘、법국애삼3충류형보수제，대보수제재거리자수중적반복흡석수특성이급불동리자류형대보수제반복흡석수능력적영향진행연구。결과표명：불동류형、립경보수제수착반복흡석수차수적증가，흡수배솔강저。보수제반복흡석수능력순서위：애삼〉한력묘〉과한：대립경비소립경강폭경대。각보수제반복흡석수특성여립경불성선성규률변화。재반복흡석수조건하．각보수제흡수속솔균고우제1차흡수속솔。수착흡석수차수적증가，보수제응효체도포화적시간제전．대우과한영향효응최위명현。2＋리자대보수제적반복흡수능력영향경위현저．기차위1＋리자。Zn2＋최역사보수제실효．KNO，대보수제적영향재전기략대。
Reducing water consumption in soil is the key to achieving sustainable development in Beijing. SAP （Supper Absorbent Polymer ） becomes one of the effective ways to maintain soil moisture because of its strong water absorption and water retention abilities, along with its repeatable water absorption paper, three types of SAPs commonly used, ＂Kehan 98＂, Hanlimiao Beijing and Airsun France, and that were studied not only on the repeatedly water absorption and release characteristics in feature. In the were selected, deionized water, but also on the the influence of different ions on its repeated water absorption and release capabilities. The results showed that： water absorbency of SAPs decreased with the repeated water absorption and release in dif- ferent types and different particle sizes. Water absorption and release capabilities of three SAPs above rankedas Airsun 〉 Hanlimiao 〉 Kehan, while the decreasing extent of SAP in large particle size was greater than that in smaller size, but their water absorption and release capabilities were not varied in linear with particle sizes. Water absorption ratio after repeated water absorption and release is higher than that for the first time. With the increase the number of repeated water absorption and release, the equilibrium time for SAP hydrogels sat- urated was ahead of time, among which, Kehan was the most obvious. The divalent cations had the most signif- icant influence on water absorption and release capacities, followed by monovalent cations. In addition, SAP was easiest to lose efficacy by Zn2~, while KN03 affected the SAPs slightly major in the earlier stage.