| 宁夏中部半干旱区苜蓿水分利用效率研究 |
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| 引用本文： | 朱 林,郑淑欣,侯志军,许 兴.宁夏中部半干旱区苜蓿水分利用效率研究[J].西北农业学报,2014,23(9):84-91. |
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| 作者姓名： | 朱 林 郑淑欣 侯志军 许 兴 |
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| 作者单位： | （1. 宁夏大学 西北土地退化与生态恢复国家重点实验室培育基地，银川 750021；2. 宁夏中卫市沙坡头区农业技术推广服务中心，宁夏中卫 755000；3. 宁夏大学，银川 750021；4. 宁夏现代农业集团公司，银川 750200） |
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| 基金项目： | 国家自然科学基金项目(31160478)；宁夏自然科学基金项目（NZ1142）。 |
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| 摘 要： | 为比较不同苜蓿品种的水分利用效率(WUE)并筛选出节水品种,在宁夏中部半干旱地区选择试验地,采用灌溉和品种2因素裂区试验,主裂区为灌溉量,副裂区为苜蓿品种。对3种灌溉量下10个苜蓿品种(包括5个国外引进品种和5个国内育成品种)的产量、水分利用效率以及农艺性状进行研究。结果表明,水分处理、刈割茬次、品种对苜蓿产量、水分利用效率、株高、茎叶比有显著影响。2012年第1茬各苜蓿品种产量最高,其次为2012年第2茬,2012年第3茬最低;2011年产量略高于2012年第3茬产量。在控水条件下,固原紫花和宁苜1号水分利用效率较高,而CW400和柏拉图在充分灌水条件下水分利用效率较高。在3种灌溉量下,中苜1号和宁苜1号的耗水量较低,属于节水品种,三得利和宁苜2号耗水量较高,属于耗水品种。因此,中苜1号和宁苜1号可以作为节水抗旱品种,用于宁夏中部干旱带苜蓿人工草地的建植。
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| 关 键 词： | 水分利用效率 产量 苜蓿 |
The Study on Water Use Efficiency of Alfalfa in Semi-arid Area of Central Ningxia |
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| ZHU Lin,ZHENG Shuxin,HOU Zhijun and XU Xing.The Study on Water Use Efficiency of Alfalfa in Semi-arid Area of Central Ningxia[J].Acta Agriculturae Boreali-occidentalis Sinica,2014,23(9):84-91. |
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| Authors: | ZHU Lin ZHENG Shuxin HOU Zhijun and XU Xing |
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| Abstract: | In order to study water use efficiency (WUE) of alfalfa and screen out the water-saving varieties,split plot experiment was adopted with main split-plot being irrigation amount and alfalfa variety being second split-polt, in the semi-arid area of central Ningxia. Yield, water use efficiency and agronomic performance of different varieties were analyzed for ten varieties of alfalfa materials (including 5 foreign varieties and 5 domestic varieties) under three irrigating levels.The results showed that there are significant effects of water treatment, cutting times and variety on yield, WUE, plant height.The yield in a descending order as:the first cutting in 2012, the second cutting in 2012, cutting in 2011, and the third cutting in 2012. The water use efficiency of Guyuanzihua and Ningmu-No.1 was higher under limited irrigation condition,CW400 and Plato displayed higher water use efficiency under well-watered condition.The averaged water consumption of Zhongmu-No.1 and Ningmu-No.1 under three irrigation treatments was lower than other varities,while Sanditi and Ningmu-No.2 exhibited higher water consumption under three irrigation treatments.Therefor,as water-saving varieties,Zhongmu-No.1 and Ningmu-No.1 are suggested to be used for establishing alfalfa grassland with higher water use efficiency in the arid area of central Ningxia. |
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| Keywords: | Water use efficiency Yield Alfalfa |
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