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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (1): 153-159    DOI: 10.7522/j.issn.1000-694X.2013.00022
Biology and Soil     
The Effects of Drip Irrigation with Different Quota on the Soil Water & Salt Conditions in Oasis Shelter Forest
BAI Yuan1,2, XU Hai-liang1,3, LIU Xin-hua1, ZHAO Xin-feng1
1.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China;
3.Key Laboratory of Oasis Ecology and Desert Environment, Chinese Academy of Sciences, Xinjiang 830011, China
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Abstract  

In order to analyze the effect of different quantities of drip irrigation on soil moisture and salinity distribution and movement at oasis shelter forest, a field experiment with different irrigation quota of 30 L per plant once (treatment Ⅰ), 40 L per plant once (treatment Ⅱ) and 50 L per plant once (treatmentⅢ) was conducted in the Kalamiji oasis shelter forest at the lower reaches of the Tarim River. The results showed that: (1) The mean soil water content in the treatment Ⅰ, Ⅱ and Ⅲ were 6.68%, 8.99% and 9.92%, respectively, the horizontal movement of the soil wetting front value was 58cm, 62 cm and 74 cm for the treatment Ⅰ, Ⅱ and Ⅲ, while the corresponding value for downward movement was 40 cm, 50 cm and 67 cm, respectively, suggesting that the increased drip irrigation volume could promote the water permeability both horizontaly and verticaly. (2) The horizontal movement of the salt front in the treatment Ⅰ, Ⅱ and Ⅲ reached 40 cm, 52 cm and 63 cm, respectively, and the corresponding downward value was 41 cm, 45 cm and 55 cm, respectively, showing that the increased drip irrigation water quantity could promote soil desalinization. (3) The water deficit in 0-60 cm soil of the treatment Ⅰ, Ⅱ and Ⅲ was 23.91%-59.25%, 33.38%-51.75% and 39.69%-56.53% at day 5, 11 and 15 after drip irrigation, respectively, and the salinization value was maximum simultaneously. We thought that a regime with 40-50 L per plant once and 10-15 d cycle could be the most suitable for drip irrigating the shelterbelt.

Key words:  forest shelter      drip irrigation      soil moisture      soil salt     
Received:  14 June 2012      Published:  20 January 2013
ZTFLH:  S728.2  

Cite this article: 

BAI Yuan1,2, XU Hai-liang1,3, LIU Xin-hua1, ZHAO Xin-feng1. The Effects of Drip Irrigation with Different Quota on the Soil Water & Salt Conditions in Oasis Shelter Forest. JOURNAL OF DESERT RESEARCH, 2013, 33(1): 153-159.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00022     OR     http://www.desert.ac.cn/EN/Y2013/V33/I1/153

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