夏玉米不同生育期亏缺-复水对蒸发蒸腾和产量的影响
【目的】探究不同时间尺度下夏玉米蒸发蒸腾量的变化规律。【方法】试验在夏玉米3个生育阶段（出苗—拔节期、拔节—抽雄期、抽雄—灌浆期）分别设置3个灌水水平（充分灌溉：100%ETa；中度水分亏缺：80%ETa；重度水分亏缺：60%ETa），其中ETa为蒸渗仪实测的充分灌溉条件下的蒸发蒸腾量，采用正交试验设计，共9个处理（CK、T1、T2、T3、T4、T5、T6、T7处理和T8处理），其中CK为充分灌溉处理，其余处理为不同程度的亏缺灌溉处理，研究了不同生育期亏缺-复水对夏玉米不同时间尺度蒸发蒸腾量、产量和水分利用效率的影响。【结果】与CK相比，不同亏缺灌溉处理下夏玉米蒸发蒸散量均有所减少。T3处理复...
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| Published in | Guanʻgai paishui xuebao Vol. 41; no. 2; pp. 18 - 26 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese English |
| Published |
Xinxiang City
Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
01.02.2022
西北农林科技大学中国旱区节水农业研究院,陕西杨凌712100 西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 西北农林科技大学水利与建筑工程学院,陕西杨凌712100 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-3317 |
| DOI | 10.13522/j.cnki.ggps.2021388 |
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| Abstract | 【目的】探究不同时间尺度下夏玉米蒸发蒸腾量的变化规律。【方法】试验在夏玉米3个生育阶段（出苗—拔节期、拔节—抽雄期、抽雄—灌浆期）分别设置3个灌水水平（充分灌溉：100%ETa；中度水分亏缺：80%ETa；重度水分亏缺：60%ETa），其中ETa为蒸渗仪实测的充分灌溉条件下的蒸发蒸腾量，采用正交试验设计，共9个处理（CK、T1、T2、T3、T4、T5、T6、T7处理和T8处理），其中CK为充分灌溉处理，其余处理为不同程度的亏缺灌溉处理，研究了不同生育期亏缺-复水对夏玉米不同时间尺度蒸发蒸腾量、产量和水分利用效率的影响。【结果】与CK相比，不同亏缺灌溉处理下夏玉米蒸发蒸散量均有所减少。T3处理复水后蒸发蒸腾量基本可以恢复至正常水平，而T5、T6处理和T7处理复水后均未恢复至正常水平。抽雄—灌浆期土壤含水率应保持在75%田间持水率以上，土壤含水率低于50%田间持水率时，夏玉米将停止生长。不同亏缺灌溉处理的产量相较于CK减少5.85%~32.25%，其中T3处理比CK减少5.85%，且T3处理水分利用效率最高（2.81 kg/m3），比CK增加了4.07%。【结论】在苗期实施中度水分亏缺，拔节—抽雄期充分灌溉，可以提高夏玉米的水分利用效率，同时不造成产量的显著减少。 |
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| AbstractList | 【目的】探究不同时间尺度下夏玉米蒸发蒸腾量的变化规律。【方法】试验在夏玉米3个生育阶段（出苗—拔节期、拔节—抽雄期、抽雄—灌浆期）分别设置3个灌水水平（充分灌溉：100%ETa；中度水分亏缺：80%ETa；重度水分亏缺：60%ETa），其中ETa为蒸渗仪实测的充分灌溉条件下的蒸发蒸腾量，采用正交试验设计，共9个处理（CK、T1、T2、T3、T4、T5、T6、T7处理和T8处理），其中CK为充分灌溉处理，其余处理为不同程度的亏缺灌溉处理，研究了不同生育期亏缺-复水对夏玉米不同时间尺度蒸发蒸腾量、产量和水分利用效率的影响。【结果】与CK相比，不同亏缺灌溉处理下夏玉米蒸发蒸散量均有所减少。T3处理复水后蒸发蒸腾量基本可以恢复至正常水平，而T5、T6处理和T7处理复水后均未恢复至正常水平。抽雄—灌浆期土壤含水率应保持在75%田间持水率以上，土壤含水率低于50%田间持水率时，夏玉米将停止生长。不同亏缺灌溉处理的产量相较于CK减少5.85%~32.25%，其中T3处理比CK减少5.85%，且T3处理水分利用效率最高（2.81 kg/m3），比CK增加了4.07%。【结论】在苗期实施中度水分亏缺，拔节—抽雄期充分灌溉，可以提高夏玉米的水分利用效率，同时不造成产量的显著减少。 S161.4; [目的]探究不同时间尺度下夏玉米蒸发蒸腾量的变化规律.[方法]试验在夏玉米3个生育阶段(出苗—拔节期、拔节—抽雄期、抽雄—灌浆期)分别设置3个灌水水平(充分灌溉:100％ETa;中度水分亏缺:80％ETa;重度水分亏缺:60％ETa),其中ETa为蒸渗仪实测的充分灌溉条件下的蒸发蒸腾量,采用正交试验设计,共9个处理(CK、T1、T2、T3、T4、T5、T6、T7处理和T8处理),其中CK为充分灌溉处理,其余处理为不同程度的亏缺灌溉处理,研究了不同生育期亏缺-复水对夏玉米不同时间尺度蒸发蒸腾量、产量和水分利用效率的影响.[结果]与CK相比,不同亏缺灌溉处理下夏玉米蒸发蒸散量均有所减少.T3处理复水后蒸发蒸腾量基本可以恢复至正常水平,而T5、T6处理和T7处理复水后均未恢复至正常水平.抽雄—灌浆期土壤含水率应保持在75％田间持水率以上,土壤含水率低于50％田间持水率时,夏玉米将停止生长.不同亏缺灌溉处理的产量相较于CK减少5.85％～32.25％,其中T3处理比CK减少5.85％,且T3处理水分利用效率最高(2.81 kg/m3),比CK增加了 4.07％.[结论]在苗期实施中度水分亏缺,拔节—抽雄期充分灌溉,可以提高夏玉米的水分利用效率,同时不造成产量的显著减少. |
| Author | DUAN Weina XU Jiatun CAO Yuxin |
| AuthorAffiliation | 西北农林科技大学水利与建筑工程学院,陕西杨凌712100;西北农林科技大学中国旱区节水农业研究院,陕西杨凌712100;西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 |
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| Author_FL | XU Jiatun CAO Yuxin CAI Huanjie PENG Xiongbiao DUAN Weina |
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| Copyright | 2022. This work is published under https://creativecommons.org/licenses/by-nc-nd/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| SubjectTerms | Agricultural production Arid zones Corn Crop yield Crops Efficiency Evapotranspiration Field capacity Grain Irrigation Irrigation efficiency Irrigation water Jointing Moisture content Optimization Seedlings Semi arid areas Semiarid zones Soil water Water Water content Water deficit Water use Water use efficiency |
| Title | 夏玉米不同生育期亏缺-复水对蒸发蒸腾和产量的影响 |
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