| 灌溉水质对土壤化学特征和作物生长的影响 |
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| 引用本文： | 肖振华,万洪富,郑莲芬.灌溉水质对土壤化学特征和作物生长的影响[J].土壤学报,1997,34(3):272-285. |
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| 作者姓名： | 肖振华 万洪富 郑莲芬 |
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| 作者单位： | [1]中国科学院南京土壤研究所 [2]广东省土壤研究所 |
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| 摘 要： | 本文以灌溉水矿化度和钠吸附比为两个主要指标，组合成１６个灌溉水质处理，研究了不同灌溉水质对土壤化学性质和作物生长的影响。初步提出了引起盐害和碱害的灌溉水矿化度和钠吸附比的临界值。研究结果表明，灌溉水带入土壤的盐分在土壤中累积与淋洗交替进行。
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| 关 键 词： | 灌溉水质 矿化度 钠吸附比 土壤化学特征 |
| 收稿时间： | 1996/1/28 0:00:00 |
| 修稿时间： | 9/9/1996 12:00:00 AM |
EFFECT OF IRRIGATION WATER QUALITY ON SOIL CHEMICAL CHARACTERISTICS AND CROP GROWTH |
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| Xiao Zhenhu,Wan Hongfu and Zheng Lianfen.EFFECT OF IRRIGATION WATER QUALITY ON SOIL CHEMICAL CHARACTERISTICS AND CROP GROWTH[J].Acta Pedologica Sinica,1997,34(3):272-285. |
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| Authors: | Xiao Zhenhu Wan Hongfu and Zheng Lianfen |
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| Institution: | Institute of Soil Science, Academia Sinica 210008;Institute of Siol Science, GuangDong Province, 510650;Institute of Soil Science, Academia Sinica 210008 |
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| Abstract: | Effect of irrigation water quality on soil chemical characteristics and on crop growth was studied in this work. The salt content and sodium adsorption ratio (SAR) of irrigation water were considered to be two main indexes which were combined in the 16 treatments of irrigation water quality in the experiment. Results showed that salts of irrigation water were accumulated and leached alternately in the soil. When salt content of irrigation water was below 3.0g/L, the salt was kept balanced in soil profile. When the salt content of irrigation water was more than 3.0g/L, the salt was accumulated in the soil, even resulting in the medium secondary salinization. High SAR and high Na2CO3 in irrigation water can cause Ca2+ and Mg2+ to form sediment of CaCO3 and MgCO3 to decrease Ca2+ and Mg2+ concentration and to increase Na+ concentration in the soil solution. Thus SSP, SDR and SAR were risen. As a result ESP increased in the soil. When the SAR of irrigation water was more than 14, and the salt content was more than 3.0g/L or 4.0g/L, the growth and yield of soybean and wheat were influenced, a medium or strong soil secondary alkalization occurred. |
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| Keywords: | Irrigation water quality Mineralization degree Sodium adsorption ratio(SAR) Exchangeable sodium percentage (ESP) |
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