当前位置: 首页 > 文章 > 马颊河流域影响土壤盐渍化的几个因素的研究 土壤学报 1988 (2) 110-118
Position: Home > Articles > STUDY ON THE FACTORS AFFECTING SALINIZATION OF SOILS IN THE MAJIA RIVER VALLEY Acta Pedologica Sinica 1988 (2) 110-118

马颊河流域影响土壤盐渍化的几个因素的研究

作  者:
刘思义;魏由庆
单  位:
中国农业科学院土壤肥料研究所
摘  要:
本研究是根据马颊河流域区域水盐动态监测预报分区定量化的要求进行的室内模拟试验,采用了扰动土的土柱法。试验进行分干土柱的毛管水上升湿润锋的观测与湿土状态的蒸发两个阶段。共3个组合21个处理,在人为控制条件下,仅就地下水(潜水)矿化度、耕层土壤有机质、土体构型等三因素对土壤盐渍化的影响,进行了观测。试验表明:地下水矿化度与土壤积盐量之间存在着极显著的正相关;耕层有机质的含量在1.5%开始有明显的抑制土壤盐渍化的作用;明确了在有粘土夹层的土体中,不能以在风干土柱的毛管水上升速度来推测土壤表层返盐的快慢,而应以在湿润土时,土壤水的蒸发速度为依据。粘土夹层的抑盐作用是随其厚度的增加和层位的升高而加强。
译  名:
STUDY ON THE FACTORS AFFECTING SALINIZATION OF SOILS IN THE MAJIA RIVER VALLEY
作  者:
Liu Siyi and Wei Youqing (Institute of Soils and Fertilizers, Chinese Academy of Agricultural Sciences)
摘  要:
For study of factors affecting soil salinization, modelling experiment by soil columns was conducted in laboratory salinity of ground water, organic matter content in plow layer of soils and patterns of solum structure. The experiment results showed that (1) there was a positive correlation between salinity of ground-water and salinization of soil; (2) soil organic matter could inhibit the salinization of soil, the effect of soil organic matter on soil salinization was observed when the soil organic matter content was above 1.5%; (3) the effect of intercalated layer of clay in soil profile on the inhibition of soil salinization depended upon the depth of the clay layer and its position in profile, the effect was getting significant with the increase of its depth and rising of its position.

相似文章

计量
文章访问数: 4
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊