| Effects of drip irrigation under brackish water mulch on soil water and salt distribution and processing tomato yield |
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| DOI：10.7606/j.issn.1000-7601.2019.06.17 |
| Key Words: brackish water drip irrigation under film process tomato water and salt distribution yield |
| Author Name | Affiliation | | Yang Wenjie | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China | | Wang Zhenhua | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water Saving Irrigation Corp, Shihezi, Xinjiang 832000, China | | Ren Zuoli | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water Saving Irrigation Corp, Shihezi, Xinjiang 832000, China | | Jiang Yuxin | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water Saving Irrigation Corp, Shihezi, Xinjiang 832000, China | | Jia Zhecheng | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water Saving Irrigation Corp, Shihezi, Xinjiang 832000, China | | Chen Xiaojie | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water Saving Irrigation Corp, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| In order to investigate the effects of drip irrigation under brackish water mulch on soil water and salt distribution and growth and yield of processing tomato, two factors, irrigation salinity and irrigation quota, were set up through field plot experiments. Among them, three irrigation water salinity levels were S1: 1 g·L-1, S2:3 g·L-1, and S3:5 g·L-1, and three irrigation quotas were W1: 305 m3·hm-2, W2: 458 m3·hm-2 and W3: 611 m3·hm-2, respectively. We tried to find a drip irrigation system suitable for the growth of processing tomatoes in this region under brackish water mulch. The results showed that the vertical variation trend of soil water content under drip irrigation with mulched brackish water showed that the water content decreased gradually with the increase in depth from 0 to 20 cm, increased gradually with the increase in depth from 20 to 100 cm, and maximized the water content in the soil profile in the layer of 60 to 100 cm; the soil salt content increased with the increase in irrigation salinity and irrigation water content in the soil. Salt gradually accumulated at 35 cm away from the drip irrigation belt horizontally. When irrigation salinity exceeded 3 g·L-1, plant height and stem diameter of processed tomato were inhibited to some extent, but had little effect on yield. The results showed that the irrigation quota of 611 m3·hm-2 and salinity of 1 g·L-1 were the best treatments for drip irrigation under brackish water film in this area, and the processing tomatoes grew healthly and yielded the highest reaching 12763.2 kg. hm-2. At the same time, the brackish water of 458 m3·hm-2 and salinity of 3~5 g·L-1 could be considered in Xinjiang where freshwater resources were relatively scarce in China. Water irrigates processed tomatoes that are moderately sensitive to salt. |
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