| Effects of environmental materials on NUE and PUE of maize under different water and fertilizer conditions |
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| DOI：10.7606/j.issn.1000-7601.2016.02.16 |
| Key Words: environmental material nitrogen and phosphorus soil moisture crop yield orthogonal design |
| Author Name | Affiliation | | ZHI Dan | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China | | HUANG Zhan-bin | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China | | TIAN Yan-fei | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China | | LIU Lu-han | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China | | CHEN Shan-shan | School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China |
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| Abstract: |
| In order to investigate the synchronous effects of environmental materials on crop growth and fertilizer use efficiencies on nitrogen and phosphorous, a pot experiment using maize was set up through an orthogonal design employing soil moisture (A), nitrogen and phosphorus use level (B), environmental materials (C) and their crosstalk. Effects by the combinations of environmental materials including super absorbent polymer, zeolite and fumic acid on maize growth, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE), soil fertility and enzyme activity were analyzed, allowing the selection of an optimal treatment for improvements of crop yield and fertilizer use efficiency. The results showed that impacts from the three abovementioned factors varied. The impacts of soil moisture (A), and nitrogen and phosphorus use level (B) on maize growth, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE) were greater than those of environmental materials (C). Maize growth, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE) were promoted through the use of environmental materials. Soil fertility and the activities of urease and phosphatase were also improved. Treatment combinations with 65%～70% soil water content, 1.5 g N, 1.13 g P2O5, and 4.5 g environmental materials and also 85%-90% soil water content, 1.5 g N, 1.13 g P2O5, 9 g environmental materials were selected as the optimal treatments and could become practical depending on the soil moisture level. |
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