| 水分亏缺对覆膜玉米生长发育及产量的影响 |
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| 引用本文： | 张振华,蔡焕杰.水分亏缺对覆膜玉米生长发育及产量的影响[J].灌溉排水学报,2001,20(2):13-16. |
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| 作者姓名： | 张振华 蔡焕杰 |
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| 作者单位： | 西北农林科技大学农业水土工程教育部 |
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| 基金项目： | 高等学校博士点基金资助项目 |
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| 摘 要： | 通过系统的覆膜玉米亏水灌溉试验 ,研究了不同生育期内不同程度的水分亏缺对覆膜玉米生长发育、光合作用、产量及水分利用效率等的影响。结果表明 ,拔节期受旱对玉米株高及叶面积指数影响最大 ,抽雄后的水分亏缺对玉米生长发育影响不明显。各处理产量资料表明 ,覆膜春玉米的需水临界期为抽雄开花期 ,此期轻度的水分亏缺可造成产量大幅度下降 :灌浆期较抽雄开花期玉米产量对水分亏缺敏感程度低 ,但在这个阶段的水分亏缺也可使玉米减产 ;拔节期玉米产量对水分胁迫敏感程度较差 ,该阶段为对玉米进行水分亏缺处理的适宜时期
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| 关 键 词： | 水分胁迫 生长发育 产量 覆膜玉米 |
| 文章编号： | 1000-646(2001)02-0013-04 |
| 修稿时间： | 2001年2月27日 |
Influences of Water Deficit on Growth, Development and Yield in Plastic-Mulched Spring Corn |
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| ZHANG Zhen hua,CAI Huan jie.Influences of Water Deficit on Growth, Development and Yield in Plastic-Mulched Spring Corn[J].Journal of Irrigation and Drainage,2001,20(2):13-16. |
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| Authors: | ZHANG Zhen hua CAI Huan jie |
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| Abstract: | A field experiment was conducted in 1998 and 1999 to study influence of water stress on yields and growth in plastic mulched spring corn at Wulanwusu Agricultural Meteorology Station in Xinjiang Autonomous Region. Based on field experimental data, effects of water stress occurred at various levels and in different growth stage on growth, development, photosynthesis process, yield and water use efficiency were analyzed. Results showed that influence of water stress occurred in elongating stage on plant height and Leaf Area Index(LAI) was very serious, and that water stress occurred after tasseling stage had little effects on plant height and LAI. A mild water stress in tasseling stage had significant influence on yield. Although water stress sensitivity was lower in milking stage than that in tasseling stage in plastic mulched spring corn, water stress occurred in milking stage still reduced yield obviously. Because yield has little sensitive to water stress occurring in elongating stage, limited water irrigation is possible to be carried out in this stage. |
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| Keywords: | water stress growth and development yield water use efficiency plastic mulched spring corn |
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