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当前位置: 首页 > 文章 > 不同盐化土壤理化性质差异研究 农业科学研究 2016,37 (3) 36-39
Position: Home > Articles > A study of soil physicochemical properties for different levels of salinization Journal of Agricultural Sciences 2016,37 (3) 36-39

不同盐化土壤理化性质差异研究

作  者：
陈萍;何文寿
单  位：
宁夏大学农学院;宁夏农垦农林牧技术推广服务中心
关键词：
盐化;土壤理化性质;交换性钠;碱化度
摘  要：
通过GPS定点,选取轻度、中度及重度盐化土壤测定土壤理化性质,分析土壤盐化程度对土壤理化性状的影响.结果表明:随土壤盐化程度加剧,重度、轻度与中度盐化土壤的含水量差异显著;土壤容重大小依次为重度、中度、轻度;总孔隙度大小依次为轻度、中度、重度;粉粒及黏粒含量增加;沙粒和大于0.25 mm土壤水稳性团聚体含量减少;p H值呈现降低趋势;全盐含量呈现增加趋势.土壤阳离子交换量、交换性钠和碱化度含量在3种不同盐化程度的土壤中差异显著.随土壤盐化程度加剧,土壤养分含量显著降低,土壤含水量减少,容重增加,团聚体含量降低,阳离子交换量下降,土壤结构性变差.
译  名：
A study of soil physicochemical properties for different levels of salinization
作  者：
Chen Ping;He Wenshou;Agricultural Technology Extension and Service Center of Ningxia Agricultural Reclamation;School of Agriculture,Ningxia University;
关键词：
salinization;;soil physicochemical properties;;exchangeable sodium;;alkalization degree;;differences
摘  要：
In order to study the effect of soil salinization degree on soil physic and chemical properties in Ningxia, the mild, moderate and severe salinization soil were separately selected as the soil sample by means of GPS. The results showed that the moisture content of the soil has significant difference in mild, moderate and severe saline soil. The change of soil bulk density shows mild < moderate < severe; The change in total porosities of the soils shows severe < moderate < mild, and the content of silt and clay have increased; Sand and soil water- stable aggregates have decreased; p H showed a trend of decrease and total salt content showed a trend of increase. Soil cation exchange capacity and the exchangeable sodium and alkalization degree content have a great difference in three different salinization soils.we can concluded that the soil nutrient content were decreased significantly, soil moisture content went decreased, the bulk density increased, lower aggregate content and cation exchange capacity decreased, which indicated that the soil structural were obviously changed with the soil salinization degree increasing.

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