| 限量灌溉和施磷对冬小麦光合性能及水分利用效率的影响 |
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| 引用本文： | 郑彩霞,张富仓,张志亮,倪福全. 限量灌溉和施磷对冬小麦光合性能及水分利用效率的影响[J]. 灌溉排水学报, 2009, 0(6) |
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| 作者姓名： | 郑彩霞 张富仓 张志亮 倪福全 |
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| 作者单位： | 西北农林科技大学旱区农业水土工程教育部重点实验室;四川农业大学信息与工程技术学院; |
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| 基金项目： | 国家自然科学基金项目(50579066) |
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| 摘 要： | 在大田条件下研究了不同灌水和施磷组合对冬小麦整个生育阶段光和性能的影响。结果表明,灌水、施磷影响了冬小麦的生理指标。施磷主要是提高了作物的光合作用能力,从而使作物的瞬时水分利用效率提高;灌水主要促进了冬小麦的蒸腾速率,使光合速率/蒸腾速率的比值降低。冬小麦叶片的蒸腾和光合速率呈非线性关系,光合速率随蒸腾速率增加而缓慢增加,增加到一定程度后,光合速率不再增加。冬小麦叶片的蒸腾速率和瞬时水分利用效率呈直线负相关关系,瞬时水分利用效率随着蒸腾速率的增大而减小。试验条件下,灌水量为180 mm与施磷量120 kg/hm2是冬小麦节水效果较佳的组合。
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| 关 键 词： | 灌溉 磷肥 冬小麦 光合性能 水分利用效率 |
Effects of Limited Irrigation and Phosphorus on Leaf Photosynthesis and WUE of Winter Wheat |
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| ZHENG Cai-xia,ZHANG Fu-cang,ZHANG Zhi-liang,NI Fu-quan. Effects of Limited Irrigation and Phosphorus on Leaf Photosynthesis and WUE of Winter Wheat[J]. Journal of Irrigation and Drainage, 2009, 0(6) |
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| Authors: | ZHENG Cai-xia ZHANG Fu-cang ZHANG Zhi-liang NI Fu-quan |
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| Affiliation: | ZHENG Cai-xia1,2,ZHANG Fu-cang1,ZHANG Zhi-liang1,NI Fu-quan2 (1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education,Northwest A & F University,Yangling 712100,China,2.College of Information and Technology,Sichuan Agriculture University,Yaan 625014,China) |
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| Abstract: | The experiment was completed in the field to study the effects of limited irrigation and phosphorus on leaf photosynthesis of winter wheat in whole growing stage.The result showed that effect of limited irrigation and phosphorus on physiological Index of winter wheat.Applying phosphorus mainly improve the activity of crop photosynthesis,resulting in the increase of short-time water use efficiency.Irrigation mainly accelerates transpiration rate of winter wheat,leading to the decrease of P/E.It is non-linear... |
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| Keywords: | irrigation phosphorus winter wheat photosynthesis WUE |
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