Influence Of Planting Hole Body Factor On Salt Transport Of Saline Soil

Most of the Hebei Binhai Area are heavy saline-alkali land, which are an area oftens of thousands of hectares and sparse original vegetations. Before construction ofeconomic development zone in the region to salt pan.In order to build HeBei Binhai New Area to economic prosperity, we have tocontrol soil salinization. There are traditional treatment methods including saline soilhydraulic measures, improvement of physical, chemical and biological. The aim ofsaline control is to achieve the restoration and reconstruction of degraded eco-system,and the mechanism and model of water-salt transport is the core issue of saline soil.In the field experiments, we use uniform design to influence changes of water andsalt of coastal saline soil, combining planting hole control body (PHCB), which iscomposed of halophilous trees, edge materials, coating materials and filling materialsetc. soil salt content and soil moisture on the use of SPSS13and excel in0-80cmdepth of soil profile, to establish appropriate prediction equations and select optimallevel of control factors of PHCB.In U12uniform design field experiment in the test base,the salt resistance:Y=0.910-0.322X11-0.351X12+0.179X32-0.025X4-0.107X5, the order was:Halophilous tree>Fill type>Disposition pattern of filling materials> fill thickness, theoptimal level were: plant is Sophora japonica L., fill type is cow dung+peat, fillthickness of9cm, and the disposition pattern of filling materials is Doublebags(bottom+around).Through the field experiments in the test base for further comprehensive analysis,we can concluded that the optimal level of water-retention and salt resistance ofPHCB: Halophilous tree for Rhus typhina L. or Sophora japonica L., the amount ofPVA is1%~2%, pectin for0.1%, fill type is peat, and the disposition pattern of fillingmaterials is bottom+around.