1) soda-saline soil
苏打型盐渍土
1.
Research y on strength of Song-Nen Plain soda-saline soil;
松-嫩平原苏打型盐渍土强度特性研究
2.
A Study on Strength of Songnen Plain Soda-saline Soil;
松嫩平原苏打型盐渍土强度特性研究
2) soda saline soil
苏打盐渍土
1.
Salt-water regulation of soda saline soil in Songnei Plain;
松嫩平原苏打盐渍土水盐调控与开发利用
3) Saline-sodic soil
苏打盐渍土
1.
Groundwater depth and mineralization have an important influence to the salinization happening and the water-salt transport of saline-sodic soil.
本文通过在"中国大安碱地生态试验站"进行野外定位实验,研究了人工控制潜水位下的土壤水盐动态,进一步探讨了不同潜水位下的苏打盐渍土水盐运移规律。
2.
An experiment of leaching saline-sodic soil with brackish water was conducted for analysis of changes in physical and chemical properties of the soil,such as soil infiltration,bulk density,salt and alkali content,etc.
在轻度盐碱化和中度盐碱化2种苏打盐渍土上,分别设置对照、补充灌溉、低额淋洗和高额淋洗4个处理,对经微咸水淋洗的苏打盐渍土的土壤渗透性、土壤容重以及土壤盐碱含量的分析结果表明,在高额淋洗区,微咸水在中度苏打盐渍土中渗透速率约为对照区的3倍,在轻度苏打盐渍土中约为对照区的2倍。
4) sodic saline soil
苏打盐渍土
1.
Variation of water and salinity in sodic saline soil during frozen-thawing season;
冻融季节苏打盐渍土的水盐变化规律
2.
Water transportation between soil-groundwater in sodic saline soil system;
通过野外定位观测和室内分析,探讨了苏打盐渍土微域特征(32m长的横截面)及其水分和地下水之间的转化规律。
5) Soda-saline soil
苏打盐渍土
1.
The regulation of dynamic change of soda-saline soil has a close relation with climate and the seasoning process of soil freezing and thawing Soil freezing and thawing will accelerate the process alkalization for the soda-saline soil The topographic changes in small area and the human activity will directly control the direction and the speed of water-soluble salts of soil.
苏达盐渍土动态变化规律与气候和土壤季节性冻融过程密切相关,土壤融冻加速苏达盐渍土碱化作用,而微地形变化及人为活动直接控制土壤水溶性盐类运动方向和速度,所有这些严重影响着作物的生育,本文着重阐述耕地土壤融冻过程和微地形对苏打盐渍土水盐运动的影响及改良措施。
6) soda-type saline soil
苏打渍盐土
1.
Soda-type composition of saline soil mainly in NaHCO_3 and Na_2CO_3, the unique engeering properties in highway construction as follows: soda-type saline soil resulted in poor drainage capacity of the road to settlement, such as road embankment collapse disease.
松嫩平原分布有大面积的渍盐土,多数属于内陆苏打渍盐土。
补充资料:盐渍土地基勘察
盐渍土地基勘察
salty soil foundation investigation
yanzitud一l一kaneha盐溃土地基勘察(salty 5011 foundat沁n in--vestigation)为盐渍土地基上建筑的设计和施工所进行的工程地质勘察。盐溃土是指土中易溶盐含量高于0.5%,具有吸湿、松胀等特性的土。盐渍土按分布区域分为滨海盐渍土、内陆盐溃土和冲积平原盐溃土;按含盐性质分为氯盐类、硫酸盐类和碳酸盐类盐渍土;按含盐量分为弱盐渍土、中等盐溃土和强盐渍土。 土中所含易溶盐的性质和含量对盐渍土的工程性能影响较大。氯盐类具有较强的吸湿性,使土软化。硫酸盐类具有吸水膨胀失水收缩的特性,使土变松。碳酸盐类盐渍土主要为含Na厂03、NaHC03的土,其溶液具有碱性反应,阳离子吸附性强,粘土颗粒结合水膜增厚,不仅颗粒间的粘聚力减小,而且引起土体膨胀。 勘察工作内容包括:查明盐渍土的分布范围、厚度、形成条件、含盐类型、含盐程度、湿陷性和膨胀性、溶蚀洞穴及其分布;确定场地有害毛细水上升高度;判定土、水对建筑材料的腐蚀性等。勘探点的布置应满足查明盐渍土分布的要求。土试样数量应按不同勘察阶段和不同深度区别对待,即详细勘察比初步勘察、浅部比深部取土间隔要缩小一些。地基承载力的确定应以静力载荷试验为主,辅以其他土的原位试验。土的试验室试验除作一般试验项目和易溶盐分析外,还要进行一定数量的化学分析和有机质含量测定,必要时对土的结构进行电子显微镜鉴定。根据勘察结果,对盐渍土地基进行评价。 (傅世法)
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参考词条