It is documented that biochar has a well-established solute adsorption capability and a few studies on the subject have been published, our goal in using slow-release fertilizers is to reduce the amount of vital nutrients that are lost during the agricultural process. In this study, commercial fertilizer was enhanced with biochar and rice straw, and the patterns of nutrient release were compared to those of conventional fertilizer. The production of Blank slow-release fertilizer (BL), Rice straw slow-release fertilizers (RSSRF) and Biochar slow-release fertilizers (BSRF) was revealed by X-ray powder diffraction (XRD), Infrared (IR) measurements, Scanning electron microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX). Fertilizer release is conducted using a column technique which verified that BSRF exhibits lower release behavior of NO3-, PO43-, and K+ than both commercial fertilizers and RSSRF. BSRF might be able to lower nutrient leaching and hence raise crop nutrient efficiency. This outcome inspires us to Subsequent investigations ought to concentrate on comprehending the processes involved in nutrient release, aligning nutrient release with plant uptake, and utilizing the BSRF in environmental remediation.