Abstract: In order to explore the one-time application effect of different properties of special organic-inorganic compound fertilizers for rice and their suitable dosage, two kinds of organic-inorganic compound fertilizers were selected, and four levels of fertilizer dosage were set for rice field experiments. The results showed that there was a positive correlation between the yield of rice and the total application amount of inorganic nutrients when organic-inorganic compound fertilizer was applied in paddy soil-yellow-brown clay mud field in Yingcheng. From the perspective of fertilization benefit, 900 kg/hm² of organic-inorganic compound fertilizer with the N-P-K ratio of 15-7-8 in Hubei Xiangyun was the best, and 600 kg/hm² of organic-inorganic compound fertilizer with the N-P-K ratio of 15-6-9 in Hubei Yishizhuang was the best.

Key words: organic-inorganic compound fertilizer, rice, use effect, appropriate dosage