| Study on effects of different irrigation treatments on evaportranspiration and yield in spring maize |
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| DOI：10.7606/j.issn.1000-7601.2009.06.13 |
| Key Words: film-hole irrigation maize irrigation schedule water-consuming law yield |
| Author Name | Affiliation | | LIU Yujie | nstitute of Geographic Sciences and Natural Resources Research CAS, Beijing 100101, China；Graduate University of Chinese Academy of Sciences, Beijing 100049, China；College of Hydraulic and Architectural Engineering Northwest A ＆F University, Yangling, Shaanxi 712100, China | | LI Yuannong | College of Hydraulic and Architectural Engineering Northwest A ＆F University, Yangling, Shaanxi 712100, China | | PAN Tao | ．Institute of Geographic Sciences and Natural Resources Research CAS, Beijing 100101, China | | ZHAI Luxing | School of Environment and Resources Guangxi Normal University, Guilin, Guangxi 541004, China | | DU Zilong | College of Hydraulic and Architectural Engineering Northwest A ＆F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| A study is made on the water-consuming law and yield of spring maize under treatments of different irrigation quota on each application and frequcency.The experimental results show that with the same irrigation quota,irrigation frequency affects significantly maize yield and soil water content fluctuation of high irrigation frequency treatment changes more slowly than that of low irrigation frequency treatment,and soil water variation keeps in a stable range.With the same irrigation frequency,the yield improves with irrigation quota in some scope.Water consumption increases with irrigation quantity,the high soil water consumption time in the whole growing period are jointing～tassel emergence and tassel emergence～milky maturity stages.In these stages spring maize is sensitive to water stress.They are the critical stages of water requirement,and WUE decreases as the irrigation quantity increases. |
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