Effects of Salt-isolation Layer on Physico-chemical Properties of Coastal Saline Soil
ZHANG Wei
LI Suyan
SUN Xiangyang
ZHANG Donghua
WANG Linlin
ZHANG Tao
ZHAI Penghui
Abstract：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 .
Keywords：salt-isolation layerscoastal saline soilceramsitezeolitevermiculite
Publication Date：2013-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 51-54 )