Zhou Linglin, Zhao Pan, Chi Yu, Wang Dongfang, Wang Pan, Liu Ning, Cai Dongqing, Wu Zhengyan, Zhong Naiqin
Key Laboratory of Ion Beam Bioengineering, Key Laboratory of Environmental Toxicology and Pollution Control, Technology of Anhui Province, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, P.R. China.
University of Science and Technology of China, Hefei, 230026, P.R. China.
ChemSusChem. 2017 May 9;10(9):2068-2079. doi: 10.1002/cssc.201700032. Epub 2017 Apr 5.
Urea tends to be hydrolyzed by urease and then migrate into the environment, which results in a low utilization efficiency and severe environmental contamination. To solve this problem, a network-structured nanocomposite (sodium humate-attapulgite-polyacrylamide) was fabricated and used as an excellent fertilizer synergist (FS) that could effectively inhibit the hydrolysis, reduce the loss, and enhance the utilization efficiency of nitrogen. Additionally, the FS exerted significant positive effects on the expression of several nitrogen-uptake-related genes, ion flux in maize roots, the growth of crops, and the organic matter in soil. The FS could modify the microbial community in the soil and increase the number of bacteria involved in nitrogen metabolism, organic matter degradation, the iron cycle, and photosynthesis. Importantly, this technology displayed a high biosafety and has a great potential to reduce nonpoint agricultural pollution. Therefore, this work provides a promising approach to manage nitrogen and to promote the sustainable development of agriculture and the environment.
尿素容易被脲酶水解，然后迁移到环境中，这导致利用率低下和严重的环境污染。为了解决这个问题，制备了一种网络结构的纳米复合材料（腐殖酸钠-凹凸棒石-聚丙烯酰胺），并将其用作一种优异的肥料增效剂（FS），它可以有效抑制水解，减少损失，并提高氮的利用效率。此外，FS对几个氮吸收相关基因的表达、玉米根中的离子通量、作物生长和土壤中的有机质都有显著的积极影响。FS可以改变土壤中的微生物群落，增加参与氮代谢、有机质降解、铁循环和光合作用的细菌数量。重要的是，这项技术具有很高的生物安全性，在减少农业面源污染方面具有巨大潜力。因此，这项工作为管理氮以及促进农业和环境的可持续发展提供了一种有前景的方法。
