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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (5): 1433-1439    DOI: 10.7522/j.issn.1000-694X.2013.00209
Biology and Soil     
Influences of Sand-mulching Years on Soil Temperature, Water Content, and Growth and Water Use Efficiency of Watermelon
MA Zhong-ming, DU Shao-ping, XUE Liang
Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
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Abstract  

To provide a theoretical basis for improving production efficiency of the mid-old aged sand-covered land by finding the changing trend of soil temperature, water content and watermelon growth as increase of planting years in sand-covered land, trials were conducted to study the influences on soil content and thickness of sand layer, soil water content and temperature, the growth and development of watermelon in land covered for 5-40 years. The results showed that soil content increased 0.6% and thickness decreased 0.12 cm in the sand layer as the sand-mulching age increased one year. Compared to 5 years old sandy land, the accumulated soil temperature of 10, 15, 20, 30 and 40 years old land at 0-20 cm soil layer reduced 47.68, 117.28, 122.49, 206.56 and 320.06 ℃, and soil water content in 100 cm soil layer reduced 11.74, 33.15, 39.31, 51.99 and 57.3 mm during watermelon growth period, respectively. It was revealed that the changes of soil temperature and soil water for new and mid-aged sandy land weakened as deepening of soil layer and growing of watermelon by comparing to old-aged sandy land. The growing period of watermelon was delayed and soil temperature, soil water content, yield, quality and water use efficiency was decreased as increasing of the age of sandy land. Yield increased by 170.91%, 85.06%, 58.76% and 46.83%, sugar content increased by 1.7%, 1.6%, 1.3% and 0.8%, and water use efficiency increased by 83.48%, 35.18%, 35.35% and 31.50% for 5, 10, 15 and 20 years old sandy land by comparing to the 30 years old one.

Key words:  sand-covered land      sand-mulching years      soil temperature and water      watermelon     
Received:  29 June 2012      Published:  22 October 2012
ZTFLH:  S318  
Articles by authors
MA Zhong-ming
DU Shao-ping
XUE Liang

Cite this article: 

MA Zhong-ming, DU Shao-ping, XUE Liang. Influences of Sand-mulching Years on Soil Temperature, Water Content, and Growth and Water Use Efficiency of Watermelon. JOURNAL OF DESERT RESEARCH, 2013, 33(5): 1433-1439.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00209     OR     http://www.desert.ac.cn/EN/Y2013/V33/I5/1433

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