Forward osmosis (FO), as one energy-efficient desalination technology, had been intensively studied in agricultural fertilization to meet the demand of the water resource and the fertilizer for plant growth, showing good techno-economic benefit. As such, the energy-efficient temperature-enhanced osmotic membrane distillation (T-OMD) heated by low-grade thermal sources (i.e. solar energy) was firstly investigated in agricultural fertilization via techno-economic comparison with FO. The experimental investigation revealed that T-OMD in the agricultural fertigation can be endowed with quadruple advantages of high water flux at a high-temperature difference (>40 °C), low fertilizer loss, good compatibility for different fertilizers, and good feasibility to utilize some unconventional waters (i.e. wastewater, seawater, and seawater RO brine). Furthermore, a preliminary economic analysis showed that the membrane area and the price of the FO membrane module are two significant indicators to evaluate the economic feasibility of T-OMD. In detail, T-OMD must be more cost-effective than FO if the total membrane area is larger than 10,000 m² under the same operating temperature configuration or dilution factor lower than 0.25 and permeate flux higher than 10,000 m³/h are satisfied under different operating temperature configurations. Based on the experimental investigation and economic analysis, T-OMD can provide an alternative pathway to achieve high-efficient and cost-effective agricultural fertigation.

正向渗透（FO）作为一种节能型海水淡化技术，在农业施肥中得到了深入研究，以满足水资源和植物生长对肥料的需求，显示出良好的技术经济效益。因此，通过与FO的技术经济比较，首先研究了由低品位热源（即太阳能）加热的节能温度增强渗透膜蒸馏（T-OMD）在农业施肥中的应用。试验研究表明，T-OMD在农业灌溉施肥中具有高温差（>40℃）水通量高、肥料损失小、对不同肥料相容性好、利用可行性好等四重优势。一些非常规水域（即废水、海水和海水 RO 盐水）。此外，初步经济分析表明，膜面积和 FO 膜组件的价格是评估 T-OMD 经济可行性的两个重要指标。详细地说，如果总膜面积大于 10,000 m，T-OMD 必须比 FO 更具成本效益²在相同的工作温度配置或低于0.25 的稀释系数和高于10,000 m ³ /h 的渗透通量下，在不同的工作温度配置下满足。基于实验调查和经济分析，T-OMD可以为实现高效、经济的农业灌溉施肥提供替代途径。