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中国沙漠 ›› 2000, Vol. 20 ›› Issue (s1): 64-65.

• 论文 • 上一篇    下一篇

沙地春玉米叶片水势与土壤水肥关系的研究

崔建垣, 周海燕, 张铜会   

  1. 中国科学院 寒区旱区环境与工程研究所, 兰州 730000
  • 收稿日期:2000-01-15 修回日期:2000-03-20 出版日期:2000-12-31 发布日期:2000-12-31
  • 作者简介:崔建垣(1969-),男(汉族),甘肃靖远人,硕士,助理研究员,主要从事作物栽培研究。
  • 基金资助:
    国家"973"项目(G1999043400);国家"九五"攻关项目(96-920-13-02);院特别支持项目(KZ95T-04;KZ951-A1-301);院重点项目(KZ-952-91-218);国家重大基金课题(49890330);内蒙科委课题"西部之光"(999078);自然科学基金(990141)

Relationship between Cell Water Pressure Popential of Corn Leaf and Soil Water and Fertilizer Condition in Sandy Land

CUI Jian-yuan, ZHOU Hai-yan, ZHANG Tong-hui   

  1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2000-01-15 Revised:2000-03-20 Online:2000-12-31 Published:2000-12-31

摘要: 通过鉴定二次回归旋转正交组合设计试验,获得沙地春玉米拔节期叶片水势(Y)与土壤相对含水量(X1)和尿素施用量(X2)之间的关系方程:Y=-1.35+0.06X1-0.02X2+0.05X1X2+0.05X12+0.09X22。玉米拔节期的叶片水势受土壤含水量的影响远大于受施肥量的影响;当土壤相对含水量为74%、尿素施用为59g·m-2时,玉米拔节期的叶片水势最高。

关键词: 沙地, 春玉米, 叶水势, 土壤水肥

Abstract: The mathematical model for the relationship between cell water pressure potential(Y) of corn leaf and soil water(X1) and fertilizer(X2) condition has been established:Y=-1.35+0.06X1-0.02X2+0.05X1X2+0.05X12+0.09X22.The result shows that the cell water pressure potential is affected mostly by soil moisture capacity.A 54% of field moisture capacity may bring a lost of cell water pressure potential.The best cell water pressure appears when the field moisture capacity is above 60% and urea inputting is above 45 g·m-2.

Key words: sandy land, spring corn, cell water pressure potential, soil water and fertilizer

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