草地学报

›› 2003, Vol. 11 ›› Issue (4): 346-349.DOI: 10.11733/j.issn.1007-0435.2003.04.015

• 研究论文 • 上一篇    下一篇

紫花苜蓿花前蒸腾系数及紫花苜蓿和玉米经济产量耗水系数比较

孙洪仁   

  1. 中国农业大学草地研究所, 北京, 100094
  • 收稿日期:2003-10-10 修回日期:2003-12-10 出版日期:2003-11-15 发布日期:2003-11-15
  • 作者简介:孙洪仁(1965- ),男,讲师,主要从事人工草地水肥管理研究

Alfalfa’s Pre-blossoming Transpiration Coefficients and Comparison of the Water Consumption Coefficients Between Alfalfa and Maize in Terms of Economic Yield

SUN Hong-ren   

  1. Institute of Grassland Science, China Agricultural University, Beijing 100094
  • Received:2003-10-10 Revised:2003-12-10 Online:2003-11-15 Published:2003-11-15

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摘要： 探讨苜蓿花前与全生育期蒸腾系数的差异,对苜蓿和玉米经济产量耗水系数进行比较。结果表明,苜蓿花前蒸腾系数约为全生育期的1/2;苜蓿经济产量耗水系数为400～620,玉米为400～600。据此提出加强苜蓿花前需水规律研究的建议。

关键词: 草原学, 花前蒸腾系数, 经济产量耗水系数, 紫花苜蓿, 玉米

Abstract: A comparison of the different of alfalfa’s transpiration coefficients between the pre-blossoming and the whole growth stage and the water consumption coefficients of alfalfa and maize in terms of economic yield were made. The results show that the pre-blossoming transpiration of alflfa is about half of that of the whole growth stage. The water consumpation coefficients of alfalfa on economic yield was 400 to 620,while the maize was 400 to 600. According to the above results,we suggest that further study on alfalfa’s pre-blossoming water requirement regulation be focused.

Key words: Grassland science, Pre-blossoming transpiration coefficient, Water consumption coefficient on economic production, Alfalfa, Maize