›› 2001, Vol. 9 ›› Issue (3): 207-212.DOI: 10.11733/j.issn.1007-0435.2001.03.009

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Study on the Evapotranspiration and Water Saving Ability of Kentucky Bluegrass Cultivars

PAN Quan-shan, HAN Jian-guo, WANG Pei   

  1. Grassland Institute, China Agriculture University, Beijing, 100094, China
  • Received:2000-11-09 Revised:2001-06-07 Online:2001-08-15 Published:2001-08-15

五个草地早熟禾品种蒸散量及节水性

潘全山, 韩建国, 王培   

  1. 中国农业大学草地研究所, 北京, 100094
  • 作者简介:潘全山(1974- ),男,1997年毕业于甘肃农业大学草地学院,2000年研究生毕业于中国农业大学草地研究所.现在丹麦丹农种子公司中国工表处工作
  • 基金资助:
    北京市自然科学基金重点项目(6001001)资助

Abstract: Among the cultivars of Ken tucky bluegrass,the ET of Dawn and Nuglade was higher than that of S-21,Midnight and Nassau,respectively.The ET difference between Dawn and Nuglade was not significantly,so was the ET difference among S-21,Midnight and Nassau.Under the condition of limited water supply,S-21 and Nassau had the highest water saving ability,which has lower ET,higher relative water content and water potential,higher soil water content and lower soil water tension than the other three cultivars.Dawn and Nuglade had lowest water saving ability.Midnight had medium water saving ability.Deficient soil water content can greatly influence ET of Kentucky bluegrass cultivars,every treatment's ET was less than that of CK.

Key words: Kentucky bluegrass, Evapotranspiration, Water saving ability

摘要: 研究5个草地早熟禾品种的蒸散量及节水性。结果表明,在土壤水分充足,其它条件相同的情况下,Dawn和Nuglade品种的蒸散量大于S-21、Midnignt和Nassau。在水分胁迫下,S-21和Nassau的节水性好,耗水量低,较高的相对含水量和叶片水势,同时土壤含水量变幅小,土壤水吸值小,而Dawn与Nuglade恰好相反,Midnight的节水性介于前两者及后两者之间。

关键词: 草地早熟禾, 蒸散量, 节水性

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