CAJ | 학술논문

为探索盐碱地降盐改土的方法，以天津市大港区滨海盐土为研究对象，选取了陶粒、沸石、蛭石3种材料，分别在树穴底部和侧壁铺设10 cm厚的隔离层，研究了其对盐碱土理化性质的改良作用。结果表明：以沸石作为隔盐层可使土壤容重下降8.05％，土壤通透性增强；以沸石和蛭石作为隔盐层，土壤总孔隙度分别上升19.9％和15.3％，土壤非毛管孔隙度分别增加3.64倍和2.99倍，更有利于降水的下渗。3种材料均有降盐效果，陶粒、沸石、蛭石作为隔盐层的脱盐率分别为60.6％、72.4％、40.2％，其降盐能力表现为沸石＞陶粒＞蛭石；以陶粒、沸石、蛭石作为隔盐层均可使土壤pH值显著降低。在滨海盐碱地上应用陶粒、沸石、蛭石3种材料作为隔盐层，可以改善土壤理化性质，优化植物生长的土壤微区环境。
위탐색염감지강염개토적방법，이천진시대항구빈해염토위연구대상，선취료도립、비석、질석3충재료，분별재수혈저부화측벽포설10 cm후적격리층，연구료기대염감토이화성질적개량작용。결과표명：이비석작위격염층가사토양용중하강8.05％，토양통투성증강；이비석화질석작위격염층，토양총공극도분별상승19.9％화15.3％，토양비모관공극도분별증가3.64배화2.99배，경유리우강수적하삼。3충재료균유강염효과，도립、비석、질석작위격염층적탈염솔분별위60.6％、72.4％、40.2％，기강염능력표현위비석＞도립＞질석；이도립、비석、질석작위격염층균가사토양pH치현저강저。재빈해염감지상응용도립、비석、질석3충재료작위격염층，가이개선토양이화성질，우화식물생장적토양미구배경。
In this paper ,the coastal saline soil in Dagang district of Tianjin was taken as the re-search object ,ceramsite ,zeolite and vermiculite selected as insulation material to reduce salt con-tent of soil were laid both at the bottom and jamb wall of tree well respectively with the thickness of 10 cm .The results showed that :using zeolite as the salt-isolation layers made the soil bulk density decrease by 8 .05% and the soil permeability increase .Using zeolite and vermiculite as the salt-isolation layers the total porosity increase by 19.9% and 15.3% .Salt-isolation layers with ze-olite and vermiculite the non-capillary porosity of soil increase by 3 .64 times and 2 .99 times re-spectively .T he results also indicated that :three kinds of materials all could reduce the saltness and the rank of reflecting the ability of reducing saltness was as follows :zeolite>ceramsite>ver-miculite .The desalination rate with ceramsite ,zeolite and vermiculite was 60 .6% ,72 .4% ,40 .2%respectively .At last ,it demonstrated that using ceramsite ,zeolite and vermiculite as the salt-isola-tion layers all could reduce pH markedly .In the coastal saline land ,taking ceramic ,zeolite and vermiculite as salt-isolated layers can improve the physical and chemical properties of soil and op-timize the micro-environment for plants .