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| Effect of three kinds of environmental materials on soil moisture and fertility conservation |
| Received:January 07, 2017 |
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| KeyWord:environmental materials;super absorbent polymer;humic acid;zeolite;soil moisture;nitrogen control and phosphorous release |
| Author Name | Affiliation | E-mail | | LIU Lu-han | School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China
Beijing Capital Environmental Investment Limited, Beijing 100083, China | | | MA Yan | School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China | mayan2202@163.com | | LIU Zhen-hai | School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China | | | PENG Fei | School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China | | | HUANG Zhan-bin | School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China | zbhuang2003@163.com |
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| Abstract: |
| This study used the soil column leaching method to assess the effects of super absorbent polymer, humic acid, and zeolite on soil moisture retention, nitrogen conservation, and phosphorus activation synergism, and examined the mechanism of water and fertilizer conservation synergism through process analyzing. The results showed that:The super absorbent polymer had the best effect on soil moisture, while zeolite was the most effective for nitrogen conservation and phosphorus activation, and this effect was durable and increased with the amount of zeolite within certain limits. Compared to CK, the addition of 2 g·kg-1 of super absorbent polymer led to a decreased by 4.4% in the water leaching rate. Similarly, with the addition of 1.0 g·kg-1 humic acid, the leaching rate of nitrogen decreased by 17.4%; and with the addition of 12 g·kg-1 of zeolite, the leaching rate of phosphorus increased by 68.0%. Compared to CK, the nitrogen leaching rate decreased by 25.1% and the phosphorus leaching rate increased by 29.2% with the addition of 9 g·kg-1 of zeolite. In conclusion, the application of three environmental materials significantly improved soil water and fertilizer conservation. |
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