期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 65, 期 29, 页码 5879-5889出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.7b01699
关键词
super granular fertilizer; activate humic; catalysis; slow release
资金
- National Natural Science Foundation of China [31572201]
- Natural Science Foundation of Shandong Province [ZR2015CM035]
- Projects of Commercialization of Research Findings of Shandong Province [(2014) 183]
- Great Innovation Projects in Agriculture of Shandong Province [(2013) 136]
- National Key Research and Development Program of China [2016 YFD0201105]
- Taishan Industrial Leading Talent Program of Shandong Province [tscy20160109]
In this work, lignite, a low-grade coal, was modified using the solid-phase activation method with the aid of a Pd/CeO2 nanoparticle catalyst to improve its pore structure and nutrient absorption. Results indicate that the adsorption ability of the activated lignite to NO3-, NH4+, H2PO4-, and K+ was significantly higher than that of raw lignite. The activated lignite was successfully combined with the polymeric slow-release fertilizer, which exhibits typical slow-release behavior, to prepare the super large granular activated lignite slow-release fertilizer (SAF). In addition to the slow-release ability, the SAF showed excellent water-retention capabilities. Soil column leaching experiments further confirmed the slow-release characteristics of the SAF with fertilizer nutrient loss greatly reduced in comparison to traditional and slow-release fertilizers. Furthermore, field tests of the SAF in an orchard showed that the novel SAF was better than other tested fertilizers in improve the growth of young apple trees. Findings from this study suggest that the newly developed SAF has great potential to be used in apple cultivation and production systems in the future.
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