| A method of calculating evapotranspiration of film-mulched and drip irrigated cotton under water stress condition |
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| DOI：10.7606/j.issn.1000-7601.2010.06.09 |
| Key Words: calculation method crop coefficient evapotranspiration under film mulch and drip irrigation cotton water stress |
| Author Name | Affiliation | | HU Shunjun | Key Laboratory of Oasis Ecology and Desert Environment，Chinese Academy of Sciences，Urumqi, Xinjiang 83011, China
Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences, Urumqi, Xinjiang 83001, China | | TIAN Changyan | Key Laboratory of Oasis Ecology and Desert Environment，Chinese Academy of Sciences，Urumqi, Xinjiang 83011, China
Xinjiang Institute of Ecology and Geography，Chinese Academy of Sciences, Urumqi, Xinjiang 83001, China | | SONG Yudong | Key Laboratory of Oasis Ecology and Desert Environment，Chinese Academy of Sciences，Urumqi, Xinjiang 83011, China |
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| Abstract: |
| Using neutron proble, the soil moisture content was monitored in film-mulched and drip irrigated cotton field of Fengshou Third Farm of Awati County, Xinjiang from April to October 2003. The cotton evapotranspiration was
calculated based on the principle of water balance，Comprehensively considering the heat condition, soil moisture state and crop' s biological property, we established a mathematical model for the computation of evapotranspiration of film-mulched and drip imigated cotton field under water stress . This model involves three parameters, namely ，the evaporation potential，relative available soil water content, and days after sowing . The calculation results are in agreement with mea-sured values, and the F test reaches an extreme significance level. The model is convenient in calculation and using routine meteorological data only.It is of certain value in utilization. |
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