| 灌溉水质对苜蓿早期生长及养分吸收的影响 |
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| 引用本文： | 王晋兴,;李晓娜,;武菊英,;卜玉山.灌溉水质对苜蓿早期生长及养分吸收的影响[J].农业环境保护,2009(3):522-526. |
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| 作者姓名： | 王晋兴 ;李晓娜 ;武菊英 ;卜玉山 |
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| 作者单位： | [1]山西农业大学资源与环境学院,山西太谷030801; [2]北京草业与环境研究发展中心,北京100097 |
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| 基金项目： | 国家高技术研究发展计划（863计划）项目（2006AA100205-01）;北京市科委重大项目（D0706007040291-08） |
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| 摘 要： | 采用盆栽试验方法,设计7种不同灌溉水质对苜蓿（Medicago sativaL.cv‘.Algonquin＇）进行灌溉处理,包括：清水灌溉（F）、再生水灌溉（R）、等营养水灌溉（E）、清水和再生水交替灌溉（T）、再生水和清水1∶1混合灌溉（FR）、再生水和清水1∶2混合灌溉（F2R）、再生水和清水2∶1混合灌溉（2FR）。研究结果表明,与清水灌溉（F）相比,再生水灌溉（R）可以明显提高苜蓿的株高和侧枝数水平;交替灌溉（T）和混合灌溉（2FR）对提高苜蓿干草产量作用明显;各灌溉水质对苜蓿叶茎比、根冠比和根系活力的影响都是暂时性的,长期进行灌溉影响不显著;混合灌溉（FR、F2R、2FR）和再生水灌溉（R）会提高苜蓿体内氮、钙和镁的含量,而对钾的含量没有影响,苜蓿体内磷的含量随各灌溉水质中磷含量的增加而减小。
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| 关 键 词： | 再生水 苜蓿 生长 养分吸收 |
Effects of the Qualities of Irrigation Water on the Early Growth and Nutrient Uptake of Alfalfa |
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| Institution: | WANG Jin-xing, LI Xiao-na,WU Ju-ying, BU Yu-shan ( 1.College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China; 2.Beijing Research ＆ Development Center for Grass and Environment, Beijing 100089, China ) |
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| Abstract: | A pot experiment with seven irrigation treatments, which included fresh water irrigating（ F ）, reclaimed water irrigating （ R ）, equivalent nutrition water irrigating（ E ）, alternative irrigating of fresh water and reclaimed water（T）, and irrigations of the different proportion of fresh water and reclaimed water： 1：1 （FR）, 1：2 （F2R）, 2：1 （2FR）, was carried out to study the influences of different irrigation water qualities on the agronomic characters of Medicago sativa L. cv. ＇Algonquin＇. The results showed that, comparing with fresh water irrigating（ F ）, reclaimed water irrigating（ R ） significantly enhanced the height and lateral branch numbers of alfalfa; Alternative irrigating of fresh water and reclaimed water（T ） and mixed water irrigation of two parts of fi＇esh water and one part of reclaimed water（ 2FR ） obviously increased the hay yield of alfalfa; The effects of different irrigation water quantities on the ratio of leaf to stem, the ratio of root to shoot, and the root activity of alfalfa were temporary; Reclaimed water irrigating（R） and mixed water irrigation of fresh water and reclaimed water（ FR, F2R, and 2FR ） increased the contents of N, Ca, and Mg in alfalfa plant, but did not affect the K content; The P content in alfalfa plant decreased as the P content increased in irrigation water. |
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| Keywords: | reclaimed water alfalfa growth nutrition uptake |
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