| Study on model of crop water requirement regulation and irrigation schedule based on T-ET function method |
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| DOI：10.7606/j.issn.1000-7601.2012.03.10 |
| Key Words: irrigation schedule crop water requirement regulation Penman-Monteith formula alfalfa sprinkler irrigation |
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| Abstract: |
| A study was carried out to develop irrigation schedule for alfalfa in Aksu as an example. In use of Pen-man-Monteith formula, T-ET functional model of erop irrigation schedule was established through the function of crop growing days and water requirement. The results show that, irrigation should be made 25 times annually with a total irri-gation amount of 750 mm when the irrigation was designed as:using 323# spray nozzle, with a spray range of 20 m, flow rate of 4.71 m3/h, effective control area of 315 m2 and irrigation intensity of 14.95 mm/h. The water requirement regu-lation of alfalfa and the corresponding irrigation schedule can be obtained by using the model, which is practical way to make irrigation schedule and promote water use
efficiency in certain regions. |
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