| 张飞,塔西甫拉提·特依拜,丁建丽.渭干河——库车河三角洲绿洲盐渍化土壤特征研究[J].干旱地区农业研究,2007,(2):146~150 |
| 渭干河——库车河三角洲绿洲盐渍化土壤特征研究 |
| Analysis on characteristics of soil salinization in the deltaoasis of Weigan and Kuqa Rivers |
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| DOI：10.7606/j.issn.1000-7601.2007.02.31 |
| 中文关键词: 渭干河-库车河三角洲 盐渍化 土壤特征 |
| 英文关键词:the delta oasis of Weigan and Kuqa rivers soil salinizaition characteristic of soil |
| 基金项目:国家自然科学基金项目（40261006）;新疆自治区高校科研计划项目（XJEDU2004I06）；教育厅创新研究群体基金项目（XJEDU2004G04）；中国科学院西部之光项目；新疆维吾尔自治区高校科研计划重点项目（XJEDU2005I07） |
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| 中文摘要: |
| 在野外考察、GPS定点和土壤采校分析的基础上，借助Statistics、Excel等软件对盐离子含量、电导率与离子含量的关系、土壤总碱度与离子含量的关系、土壤水溶液中总溶解固体（TDS）与离子之间的关系、土壤含盐量与电导率的关系、盐离子间相关性以及土壤含盐量与农业产量的关系作了探讨。得出：该绿洲土壤pH值的平均值为7.86，属于碱性土壤。土壤含盐量较高，0~10 cm土层中的含盐量最大，平均值达到4.68%。土壤阳离子主要以Na+、K+、Ca2+为主，各阴离子在土体中的含量为Cl-＞SO2-4＞HCO-3,而CO2-3离子在实验中未检测到。Na+与Cl-呈正相关，K+与HCO-3呈正相关，Ca2+与SO2-4呈正相关。从而进一步说明，该绿洲盐渍化土壤为氯化物盐化土。 |
| 英文摘要: |
| Soil salinization is one of primary environmental problems in the sustainable development in the delta oasis of Weigan and Kuqa Rivers. Based on field survey, GPS location and soil analysis, soil salinization levels and distribution are investigated. Using the Statistics and Excel software, content of salt ion, relation of the conductance rate and content of ion, relation of ion content and total alkali, relation between TDS (Total dissolved solids) and ion in the soil, relation between salt content and conductivity, correlation of the salt ions, as well as the relation of salt amount and agricultural output are analyzed. The factor analysis is used to study the salinized situation of land in the oasis. The determination of the type of land salinized soil is based on its equivalent ratio of Cl- to SO2-4,while the differentiation of salinization degree for land salinized soil is chiefly based on the type and content of soil salt. Lands in the delta oasis of Weigan and Kuqa rivers are mostly of alkali soil with pH value 7.86 and high in salt content. Salts concentrate mostly in the 0~10 cm surface layer, it accounts for 4.68%. Dominated cations in the soil are Na+, K+, Ma2+ and Ca2+, whereas anion content in a decreasing order are Cl-＞SO2-4＞HCO-3 in the 0~10 cm soil layers. However, CO2-3 content fails to measure in the soils. The correlation between Na+ and Cl- content is positive and extremely significant, between K+ and HCO-3 content significantly positive. All these findings further suggest that the soils are heavy chloride saline soils. |
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