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| Effects of Planting Years on Soil Nutrients and Microbial Functional Diversity in Vegetable Plastic Tunnel in Yunyang, Shaanxi, China |
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| KeyWord:vegetable plastic tunnel；soil physical and chemical properties；soil microbial community；Biolog |
| Author Name | Affiliation | | LI Yu-di | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | GU Jie | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | FU Qing-xia | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | QIAN Xun | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | YANG Jiu | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | GAO Hua | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | WANG Xiao-juan | College of Resources Environment，Northwest A＆F University, Yangling 712100, China | | ZHU Chuang-jiang | Vegetable Industry Service Center of Jingyang, Jingyang 713700, China |
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| Abstract: |
| Soil environmental quality greatly influences vegetable quality and safety as well as economic benefit in the vegetable production under plastic tunnel. This study investigated changes of soil physical-chemical properties and microbial community function in different planting years（0 a, 5 a, 10 a, 20 a） of cucumber/tomato under plastic tunnel at Yunyang town in Shaanxi Province of China. Results showed that soil electrical conductivity（EC）, total nitrogen, total phosphorus, available nutrient and organic matter contents were the highest in the 10 a planting soils, being increased by 17.7% to 326.6%, compared with the control soil（0 a）. However, these indexes were 15.2% to 41.6% lower in 20 a soils than in 10 a soils. The ability of soil microbes to utilize carbon sources was also highest in the 10 a old soils. The average well color development（AWCD）, Shannon, Simpson, and McIntosh indexes were significantly higher in 10 a than in soils of the other years. Carbohydrate and amino acids were the main carbon sources for soil microbes. Our results suggest that 10 a planting may be the best growth years for production of vegetable plastic tunnels in this area. |
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