Abstract: In order to explore the effects of slow-release fertilizers on the growth and development of rice and fertilizer utilization efficiency, experiments were conducted in Fangdao Town, Jian'ou City, Fujian Province in 2023 using Yongyou 7860 as the experimental material, comparing it with no fertilization（CK）. Conventional fertilization（T1）, controlled-release compound fertilizer（T2）, and organic-inorganic slow-release fertilizer（T3）were used to study the effects on rice growth, yield, and fertilizer utilization efficiency. The results showed that fertilization significantly increased rice plant height, effective panicles, rice and straw yields, all of which were significantly different from CK. Among them, T2 and T3 rice yields increased by 34.01% and 40.50% respectively compared to CK. Compared with CK, both T2 and T3 significantly increased the nitrogen absorption of rice grains and straw, and the differences were significant. Compared with T1, the nitrogen fertilizer absorption and utilization efficiency of T2 and T3 increased by 40.91% and 67.33%, respectively, and both showed significant differences compared to T1. The agronomic utilization efficiency and nitrogen partial productivity of T2 and T3 nitrogen fertilizers were significantly higher than those of CK, but T3 was the best. In summary, organic-inorganic slow-release fertilizers can replace traditional chemical fertilizers in rice production.