钙质土

此外，土壤有效锰含量和土壤pH值、碳酸钙含量呈负相关。在钙质土中，土壤有效锰易被吸附，所以含量较低。

Experiment results also showed that the contents of available manganese in soil was negatively correlated with the pH value of the soil and content of calcium carbonate in the soil , and the manganese in soil was so easily adsorbed in calcareous soil that the available manganese was lower .

扁铲侧胀试验在浅海钙质土力学特性评价中的应用

Application of flat dilatometer test to mechanical characteristics evaluation of calcareous soil in shallow water

其提取率（提取C占有机质C总量%）：酸性土（高山草甸型和湿润森林型土壤）高于以钙质土为主的碱性土。

The extraction ratio , which meant the percentages that extracted C occupied the whole quantities of soil organic carbon , was : acid soils ( soil of Dark felty soils , felty soils and wet forest soils ) alkaline soils which was mainly consisted of calcium soils .

钙质土力学性质研究现状与进展

The Present Condition and Development in Studies of Mechanical Properties of Calcareous Soils

综述了国内外对钙质土静、动力学性质研究的现状与进展，得到有关结论并提出今后应加强研究的方向。

The present condition and development in studying static and cyclic properties ofcalcareous soils are explained based on Chinese and foreign data .

该林区土壤属褐红壤，具有一定的钙质土性质，有机质有特殊的幂积方式，腐殖化过程强，其肥力水平高于赤红壤，在有林情况下，不低于同纬度的红壤。

Lts fertility levels is higher than that of lateritic red earth and it is not lower than that of red earth at the same latitude if there are forest .

水溶性高分子NCP和HPAM对钙质蒙脱土表面润湿性的影响

Wetting Ability of NCP and HPAM on the Surface of Ca - montmorillonite

钙质紫色土稻麦锌素营养诊断的研究

Zinc nutrition diagnosis of rice and wheat in calcareous purple soil

但总的来说，先前对钙质岩土的定性分析多，定量计算少。

But overall , qualitative analysis more than quantitative calculation soil in previous results .

安徽淮北平原钙质结核土的分布及成因研究

Study on Distributing and Formation of the Calcareous Concretions Soil in Huaibei Plain , AnHui Province

钙质紫色土稻麦轮作中锌磷氮优化配方研究

Studies on the optimum zn p n combinations in a rice wheat rotation system on a calcareous purple soil

本文研究了钙质紫色土在连续四年免耕、垄作、秸杆覆盖下的土壤水肥状况的变化。

Studies on soil fertility changes of calcium purple soil under continuous cultivation of no-tillage and mulch straw farming from 1992-1995 were conducted .

本文研究了钙质变性土中铁锰结核的矿质全量组成、微量元素丰度、微形态特征以及土壤和铁锰结核中各形态铁锰氧化物的组成特点。

The chemical composition , microelement abundance , micromorphological characteristics of iron-manganese concretions and the forms of Fe oxides and Mn oxides in iron-manganese concretions and in soils were studied .

本文以理论分析为基础，依托沙特某电厂工程，对钙质岩土（主要是珊瑚礁）的工程性状进行全面而深入的研究。

This paper based on theoretical analysis , relied on a power plant project in Saudi Arabia , calcium geotechnical ( mainly coral reefs ) engineering traits of a comprehensive and in-depth study .

相应，籽粒和稿秆含氯量分别为0.06%和1.47～1.58%，分蘖期茎叶含氯量为2.12～2.49%。在钙质紫色土上，小麦耐土壤氯的浓度为200～400ppm。

Correspondingly , the chlorine content of wheat grains and straws and of the shoot at the tillering stage was 0.06 % , 1.47-1.58 % , 2.12-2.49 % respectively on neutral purple soils .

钙质岩土或碳酸盐类土，通常是指海洋生物（珊瑚、海藻、贝壳等）成因的、富含碳酸钙或其它难溶碳酸盐类物质的特殊岩土介质。

Calcium carbonate rock or soil , usually refers to special soil medium that marine life ( corals , algae , shells , etc. ) causes , rich in calcium carbonate or other insoluble substances .

分布特征是钙质紫色土水稻、玉米缺锌，酸性砂质土小麦缺钼，砾质黄壤油菜、柑桔缺硼，潜育化潮土小麦缺锰。

The distribution feature is that in calico purple soil rice and corn are short of zinc , in acid arenaceous soil wheat is short of molybdenum , in gravel yellow soil cole and orange are short of boron , in gles tide soil wheat is short of manganese .

钠质膨润土与钙质膨润土压实特性比较研究

Comparison of compaction behaviors of Na-and Ca-bentonite

同时在富含钙质的碱性土中，CaCO3的聚积对全钾也有一定的稀释效应。

At the same time the accumulative CaCO 3 makes " dilution effect " of the mineral potassium in alkaline soils .

为将膨润土作为消化道粘膜保护剂提供依据，本文研究了钠质、钙质膨润土对亚甲基蓝的吸附性能。

In this paper , the characters of adsorbability of Ca group and Na group bentonite to methylene blue were researched in order to apply bentonite as digestive mucosal protective agent .