| 李浩波,高云英,张景武,刘春和,余有成,惠临风.紫花苜蓿耗水规律及其用水效率研究[J].干旱地区农业研究,2006,(6):163~167 |
| 紫花苜蓿耗水规律及其用水效率研究 |
| Summary of researching on the dynamic regulation of water consumption of alfalfa |
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| DOI：10.7606/j.issn.1000-7601.2006.06.37 |
| 中文关键词: 紫花苜蓿 动态耗水规律 水分利用效率 |
| 英文关键词:Alfalfa dynamic regulation of water consumption water use efficiency |
| 基金项目:陕西省科技攻关项目“紫花苜蓿产业化综合生产技术研究”(2003K02-G16-04,2004K02-G14) |
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| 中文摘要: |
| 归纳分析国内外不同地域、不同生产方式紫花苜蓿全生长季动态耗水试验研究结果,可以推断:需水量为450~1 100 mm,极端最高可达1 900 mm;耗水量为300~1 450 mm,极端最高可达2 245 mm;需水强度和耗水强度分别为37和27 mm/d,短期极端最高需水强度为14 mm/d;种植当年,生物产量和经济产量(含水量14%)的水分利用效率分别为812,914 kg/(mm.hm2),种植2 a及以上的分别为1225和1429 kg/(mm.hm2)。 |
| 英文摘要: |
| Alfalfa water requirement(WR) and the water consumption(WC) in the whole growth season were about 450～1 100 mm and 300～1 450 mm,respectively,the highest WR and highest WC were 1 900 mm and 2 245 mm,respectively.The ranges of water requirement rates(WRR) and water consumption rates(WCR) of alfalfa during the whole growth season were 3～7 mm/d and 2～7 mm/d,respectively.The highest WRR in a short period was 14 mm/d.The range of the water use efficiencies(WUE) in biomass and economic yield(14% contained with water) of alfalfa in the first planting year were about 8～12 kg/(mm·hm2) and(9～14 kg/(mm·hm2),) respectively,in two and more than two planting years were 12～25 kg/(mm·hm2) and 14～29 kg/(mm·hm2),respectively. |
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