National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, Shandong, China.
Wendeng Agricultural Bureau, Weihai 264400, Shandong, China.
Sci Total Environ. 2022 Jul 20;831:154844. doi: 10.1016/j.scitotenv.2022.154844. Epub 2022 Mar 26.
Chemical synthetic slow release fertilizer had become a major breakthrough in the green fertilizer industry due to its superior nutrient management and degradation properties. However, the traditional chemical synthetic slow release fertilizers contain only nitrogen and consume high energy during drying. Herein, a low cost green chemical synthetic slow release fertilizer (PSRF/KCl) was prepared from urea, formaldehyde and diammonium phosphate by spray drying method. Compared with the traditional drying process, the comprehensive energy consumption is reduced by 38.13%. The SEM, FTIR, and TG characteristics of PSRF/KCl showed that it has excellent water solubility, special morphological characteristics and thermal properties. In addition, the application of PSRF/KCl in Chinese cabbage showed that PSRF/KCl could increase the yield by 26.2%. All the results showed that PSRF/KCl is a green chemical synthetic slow release fertilizer, which has broad application prospects in modern sustainable agriculture, and its matching spray drying process can effectively reduce production costs.
化学合成缓释肥料由于其优异的养分管理和降解性能，成为绿色肥料行业的重大突破。然而，传统的化学合成缓释肥料仅含有氮，并且在干燥过程中消耗大量能量。本文采用喷雾干燥法，由尿素、甲醛和磷酸二铵制备了一种低成本的绿色化学合成缓释肥料（PSRF/KCl）。与传统干燥工艺相比，综合能耗降低了 38.13%。PSRF/KCl 的 SEM、FTIR 和 TG 特性表明，它具有优异的水溶性、特殊的形态特征和热性能。此外，PSRF/KCl 在白菜上的应用表明，PSRF/KCl 可以提高产量 26.2%。所有结果表明，PSRF/KCl 是一种绿色化学合成缓释肥料，在现代可持续农业中有广阔的应用前景，其配套的喷雾干燥工艺可以有效降低生产成本。
