| Effects of embedding methods on water supplying device with negative pressure toward the growth of tomatoes and their water use efficiency |
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| DOI：10.7606/j.issn.1000-7601.2016.02.38 |
| Key Words: water supplying device with negative pressure water-supplying disc tomato water use efficiency yield |
| Author Name | Affiliation | | ZHANG Fang | Department of Hydraulic and Hydropower Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China
National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China | | XUE Xu-zhang | National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China | | ZHANG Jian-feng | Department of Hydraulic and Hydropower Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | WANG Li-chun | National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China | | LI Yin-kun | National Research Center of Intelligent Equipment for Agriculture, Beijing 100097, China |
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| Abstract: |
| Based on a pot experiment, the effects of embedding methods on water supplying device with negative pressure toward the growth of tomatoes and their water use efficient were studied in the green house, which could provide the theoretical basis for vegetable cultivation with the negative pressure irrigation technology. There were three treatments in this study including a water-supplying disc embedded at the roots of tomato with the angle of 9°(treatment I), a disc embedded only at one side of plant roots vertically (treatment II), and two parallel discs embedded at two sides of plant roots vertically (treatment III). The results showed that soil moisture content by treatment II was helpful to control plant growth, increase the stem diameter, accelerate the leaf numbers, and reduce the water volume consumption, which had a significantly improvement in water use efficiency. Compared with treatments I and III, the yield per plant with treatment II became increased by 12.70% and 15.45%, causing 18.14% and 13.70% savings of water, respectively. Therefore, embedding the water-supplying disc at one side of roots of tomato vertically (Treatment II) is the best way for high yield and water saving. |
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