| Effects of irrigation and grass on soil quality in kiwifruit orchard |
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| DOI：10.7606/j.issn.1000-7601.2019.06.15 |
| Key Words: kiwifruit orchard irrigation grass soil quality |
| Author Name | Affiliation | | WANG Xing | School of Agriculture, Ningxi University, Yinchuan, Ningxia 750021, China | | LU Jing | Department of Water Conservancy, Yangling Vocational & Technological College, Yangling, Shaanxi 712100, China | | FAN Huifang | Department of Water Conservancy, Yangling Vocational & Technological College, Yangling, Shaanxi 712100, China | | GAO Zhiyong | State Key Laboratory of Eco\|hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an, Shaanxi 710048, China | | GUO Xuxin | Department of Water Conservancy, Yangling Vocational & Technological College, Yangling, Shaanxi 712100, China | | ZHAO Ying | Department of Water Conservancy, Yangling Vocational & Technological College, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to explore the effects of irrigation and grass on soil quality in kiwifruit orchard, surface irrigation + weed control (I), surface irrigation + natural grass (II), drip + weed control (III), and drip irrigation + natural grass (IV) treatments were set up in the kiwifruit orchard in Meixian county, Shaanxi Province from 2016 to 2017. The mechanical composition and physical and chemical properties of the soil in 0~50 cm soil layer in the test site were statistically analyzed, and the soil quality of 4 treatments was evaluated with the soil quality index. The results showed that compared with other treatments, treatment III reduced soil bulk density and sand grain mass fraction of 0~30 cm soil layer by 0.02~0.24 g·cm-3 and 0.36%~5.25%, respectively, and also increased soil porosity, field capacity, clay grain mass fraction, and soil particle\|size distributions by 0.17%~7.17%, 0.59%~2.53%, 0.99%~7.15%, and 0.01~0.13, respectively; There was no difference in available phosphorus and alkali hydrolysable nitrogen in 0~30 soil layer between treatment IV and treatments I and II, but it was significantly higher than that of treatment III 10.75~109.55 mg·kg-1 and 20.74~78.91 mg·kg-1 (P<0.05). The available potassium, available phosphorus, and alkali hydrolysable nitrogen in 0~50 cm soil layer of treatment IV reached the rich, medium, and medium levels of fertilization for kiwifruit. Compared with other treatments, treatment IV increased soil clay mass fraction by 1.21%~2.66% and particle\|size distributions, and decreased soil powder mass fraction by 0.81%~1.41% (P<0.05). In addition, the soil quality index of treatment IV was the largest value of 0.619. Therefore, drip irrigation + natural grass (IV) was an effective measure for sustainable utilization of land in kiwifruit orchard. |
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