| 脱硫石膏改良碱土过程中特征值变化的研究 |
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| 引用本文： | 张海军,李跃进,陈昌和,徐旭常,王淑娟.脱硫石膏改良碱土过程中特征值变化的研究[J].干旱区资源与环境,2007,21(7):165-168. |
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| 作者姓名： | 张海军 李跃进 陈昌和 徐旭常 王淑娟 |
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| 作者单位： | 1. 内蒙古农业大学生态环境学院,呼和浩特,010019
2. 清华大学,北京,100084 |
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| 摘 要： | 本文通过田间试验,研究了脱硫石膏在改良碱土过程中对碱土特征值(盐分组成、pH值、碱化度、土壤渗透性及硬度)的影响。结果表明:施用脱硫石膏后,碱土各特征值都发生了显著变化,主要表现在碱化度从改良前的30%以上降低到了改良后的5~10%之间;pH值从改良前的9.4以上降低到了改良后的8.2以下;碳酸根、重碳酸根离子明显减少,硫酸根、钙离子及钠离子含量有所增加;土壤渗透性提高了3~8倍;土壤硬度测定值虽仍偏大,但却表现为随着脱硫石膏的施入而减小的趋势。
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| 关 键 词： | 脱硫石膏 碱土 特征值 变化 |
| 文章编号： | 1003-7578（2007）07-165-04 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2006-12-18 |
Research on the Eigenvalue's Change in the Process of Improving Alkaline Soil with Desulfurized Gypsum |
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| ZHANG Hai-jun,LI Yue-jin,CHEN Chang-he,XU Xu-chang,WANG Shu-juan.Research on the Eigenvalue''''s Change in the Process of Improving Alkaline Soil with Desulfurized Gypsum[J].Journal of Arid Land Resources and Environment,2007,21(7):165-168. |
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| Authors: | ZHANG Hai-jun LI Yue-jin CHEN Chang-he XU Xu-chang WANG Shu-juan |
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| Institution: | 1. College of Eeo- Environment, Inner Mongolia Agricultural University, Huhhot 010019;2. Qing hua University,Beijing 100084, China |
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| Abstract: | By the field experiment,the changes of eigenvalues such as salt-composition、pH、alkalinity、permeability and hardness of soil in the process of improving alkaline soil with desulfurized gypsum were investigated.The main results were as follows: after using the desulfurized gypsum,alkaline soil's eigenvalues were changed.The soil's alkalinity reduced from 30% to 5～10%;the soil's pH reduced from 9.4 to 8.2;the ion of CO2-3、HCO-3decreased apparently,SO2-4、Ca2+、Na+ slightly increased.The permeability of soil increased to 3～8 times;Although the hardness was higher,the trend of that performed decrease with the desulfurized gypsum increasing. |
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| Keywords: | desulfurized gypsum alkaline soil eigenvalue change |
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