Wang Yan, Zhang Yu-Jie, Han Ji-Mei, Li Cui-Hua, Wang Rong-Jie, Zhang Ya-Li, Jia Xin
School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, and The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi University, Shihezi 832003, People's Republic of China.
ACS Omega. 2019 Jun 14;4(6):10354-10361. doi: 10.1021/acsomega.8b03086. eCollection 2019 Jun 30.
In the natural state, the concentration of carbon dioxide in the atmosphere is about 300 μmol mol. Plants need a suitable balance of CO to achieve optimal growth. The optimum CO content corresponding to a high photosynthesis rate is between 0.1 and 1.0% by volume. However, air has only a CO content of 0.03% by volume, so plants cannot use all of their growth potential. The use of fertilizer to assist in the supply of CO increases the rate of photosynthesis. In this work, a slow-release CO gas fertilizer inspired by polyphenol chemistry was prepared to provide sustainable CO that could improve plant photosynthetic capacity and get a higher crop yield. The core-shell structure was designed to confer gas fertilizers slow-release property. Micron-sized calcium carbonate particles with uniform particle size and regularity morphology, as carbon sources for plant photosynthesis, was a core, and tannic acid was coated on it as a shell via oxidative oligomerization and cross-linked by polyetherimide. The structure and morphology of fertilizers were characterized by scanning electron microscopy, X-ray energy dispersive spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. In vitro experiments, the prepared fertilizers were proved to have slow-release properties. And then through net photosynthesis rate, chlorophyll fluorescence parameters, chlorophyll content, leaf area, leaf mass per area, and dry matter to study the effects of slow-release CO gas fertilizers on plant physiology of . The results revealed that the slow-release CO gas fertilizers not only had good slow-release properties but also can well improve plant photosynthesis.
在自然状态下，大气中二氧化碳的浓度约为300μmol/mol。植物需要合适的二氧化碳平衡来实现最佳生长。对应高光合速率的最佳二氧化碳含量为体积的0.1%至1.0%。然而，空气中二氧化碳的体积含量仅为0.03%，因此植物无法充分发挥其生长潜力。使用肥料辅助供应二氧化碳可提高光合作用速率。在这项工作中，制备了一种受多酚化学启发的缓释二氧化碳气体肥料，以提供可持续的二氧化碳，从而提高植物光合能力并获得更高的作物产量。设计核壳结构赋予气体肥料缓释性能。粒径均匀、形态规则的微米级碳酸钙颗粒作为植物光合作用的碳源为核心，单宁酸通过氧化低聚作用包覆在其表面作为壳层，并通过聚醚酰亚胺交联。通过扫描电子显微镜、X射线能量色散光谱、透射电子显微镜、X射线光电子能谱和热重分析对肥料的结构和形态进行了表征。体外实验证明所制备的肥料具有缓释性能。然后通过净光合速率、叶绿素荧光参数、叶绿素含量、叶面积、单位面积叶质量和干物质来研究缓释二氧化碳气体肥料对植物生理的影响。结果表明，缓释二氧化碳气体肥料不仅具有良好的缓释性能，而且能很好地提高植物光合作用。
