| 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 |
| Key Words: Alfalfa dynamic regulation of water consumption water use efficiency |
| Author Name | Affiliation | | LI Hao-bo | College of Animal Sc-i Tech Northwest A＆F University,Yangling,Shaanxi 712100,China | | GAO Yun-ying | College of Animal Sc-i Tech Northwest A＆F University,Yangling,Shaanxi 712100,China | | ZHANG Jing-wu | Huxian Anirnal Husbandry and Veterinary Station,Huxian,Shaanxi 710300,China | | LIU Chun-he | Luochuan County veterinarian sanitary supervision examination centerm,Luochuan,Shaanxi 727400 China | | YU You-cheng | College of Animal Sc-i Tech Northwest A＆F University,Yangling,Shaanxi 712100,China | | XI Lin-feng | College of Animal Sc-i Tech Northwest A＆F University,Yangling,Shaanxi 712100,China |
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| Abstract: |
| 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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