有机物料对黄河三角洲滨海盐土的根际效应　Ⅱ．盐分效应  

Rhizospheric effect of organic material on coastal saline soil in Huanghe River Delta Ⅱ.soil salinity effect

作　　者：吴龙华[1] 张素君[1] 张岫岚[1] 

机构地区：[1]中国科学院沈阳应用生态研究所

出　　处：《应用生态学报》1995年第4期392-396,共5页Chinese Journal of Applied Ecology

基　　金："八五"中国科学院重点项目

摘　　要：采用根际袋法研究腐熟有机物料对滨海盐土水稻淹水层及土壤的盐分和植株元素吸收的影响．结果表明，在不排水条件下，施用有机物料使淹水层盐分上升，土壤盐分也高于对照，但其根际富集程度降低；植株Ｋ吸收增强，Ｎａ则明显下降，Ｃａ、Ｍｇ含量略增，但变化没有１价元素明显．The effect of composted organic material on the salinity of coastal saline paddy soil and its submerged layer and the uptake of elements by rice plant is studied with rhizobox method. The results show that under no drainage condition. the application of organic material increases the salinity of soil and its submerged layer, but decreases the accumulation of salts in paddy rice rhizosphere. It can enhance the uptake of K, Ca and Mg, and decrease that of Na by rice plant.

关 键 词：盐土改良 有机物料 滨海盐土 盐分 根际效应 

分 类 号：S156.42[农业科学—土壤学]