| Analysis on cropping water requirement in the oasis on the Ugan—Kuqa River Delta of Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2007.05.36 |
| Key Words: the oasis on the Ugan-Kuqa River Delta cropping water requirement water problem analysis method |
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| Abstract: |
| In the light of the adjacent areas' irrigation test results,the local irrigation experiences,soil water and the use of groundwater by different crops,according to the actual crops area in 2005,the total cropping water requirement in the oasis on the Ugan-Kuqa Delta was calculated by using FAO-PM formula.The results show that the total cropping water demand is 8.01×108m3,28.49% of the total water resources.In the case of cropping water requirement,grain crops account for 37.22%,economic crops account for 59.35%,feeding crops account for 3.43%.The water duty of grain crops is higher than that of economic crops and feeding crops.Specifically,the water duty of rice,vegetables,wheat, cotton and alfalfa is higher,the water duty of maize,rape,melons and potatoes is lower.The average water demand is 5890.35 m3/hm2,the highest 6 035.32 m3/hm2 in Kuqa County,the lowest 5746.37 m3/hm2 in Shaya county.As the cropping water duty does not change by different county,it is closely related to the crops structure.Because of the serious water waste,the actual water consumption is much higher than the theoretical value in the oasis on Ugan-Kuqa River Delta. |
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