| Effects of covering methods on soil water, temperature and nitrogen of Jujube Orchard under drip irrigation |
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| DOI：10.7606/j.issn.1000-7601.2016.01.23 |
| Key Words: Jujube orchard covering method soil evaporation water content mineral nitrogen soil temperature |
| Author Name | Affiliation | | MA Jun | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China | | LEI Jiang | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China | | LI Fa-yong | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China | | SUN Liu-dong | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China | | WEI Xiao-ming | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China | | WANG Jin | College of Water Resources and Architectural Engineering, Tarim University, Alar, Xinjiang 843300, China |
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| Abstract: |
| In order to improve water and fertilizer use efficiency of Jujube Orchard under drip irrigation in South Xinjiang and improve soil properties, we performed a field experiment consisting of four soil covering patterns including reeds, wheat straw, white plastic film, and corn stalks mulching. The results showed that four covering methods reduced soil evaporation and improve soil water, compared with the control treatment, by 34.95%, 31.08%, 35.75%, 29.38%, respectively. Reeds and plastic film mulching were the best way for moisture conservation, with the heat insulation effects in the order of plastic mulch＞wheat straw＞corn stalks＞reeds. Reeds covering had the highest soil temperature in 10 cm depth, while the other treatments in 5 cm. Soil nitrogen content varied with growth stages of Jujube, plastic film mulching significantly affected the nitrate content of soil. Soil covering obviously increased soil mineral nitrogen content from early July to the mid August. Compared with control, plastic film mulching had an increase of 323.96% in mid July, which is partially due to soil temperature. Alkali-hydrolysable nitrogen was relatively high for wheat straw mulch at the early growth stages, being as high as 57.41% in mid-July. However, reeds covering had relatively smaller influence on soil water, temperature, and nitrogen. |
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