| 沙地春玉米叶片水势与土壤水肥关系的研究 |
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| 引用本文： | 崔建垣,周海燕,张铜会.沙地春玉米叶片水势与土壤水肥关系的研究[J].中国沙漠,2000,20(Z1):64-65. |
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| 作者姓名： | 崔建垣 周海燕 张铜会 |
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| 作者单位： | 中国科学院 寒区旱区环境与工程研究所, 兰州 730000 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 沙地 春玉米 叶水势 土壤水肥 |
| 收稿时间： | 2000-01-15 |
| 修稿时间： | 2000-03-20 |
Relationship between Cell Water Pressure Popential of Corn Leaf and Soil Water and Fertilizer Condition in Sandy Land |
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| CUI Jian-yuan,ZHOU Hai-yan,ZHANG Tong-hui.Relationship between Cell Water Pressure Popential of Corn Leaf and Soil Water and Fertilizer Condition in Sandy Land[J].Journal of Desert Research,2000,20(Z1):64-65. |
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| Authors: | CUI Jian-yuan ZHOU Hai-yan ZHANG Tong-hui |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| 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. |
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| Keywords: | sandy land spring corn cell water pressure potential soil water and fertilizer |
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