Abstract: 【Objective】 To explore the effects of different slow-release fertilizers on the yield and quality of buckwheat,to find the most economical ratio of slow-release fertilizers and organic fertilizers,and provide a basis for the promotion of slow-release fertilizers in buckwheat planting industry.【Methods】 Using organic fertilizer as the base fertilizer,5 slow-release fertilizers treatments were set up to determine the chlorophyll content,and the buckwheat yield and soluble sugar,protein,rutin,total flavonoids content and other quality indicators were measured at harvest.【Results】 The effect of different slow-release fertilizers on the chlorophyll content showed a trend of T4>T3>T2>T1>CK,and the yield of buckwheat showed a trend of T4>T3>T2>T1>CK;in terms of quality,the soluble sugar content,rutin content and total flavonoid content showed the trend of T4>T3>T2>T1>CK.【Conclusion】 Treatments T3 and T4 have the best promotion effect on buckwheat chlorophyll,buckwheat yield,soluble sugar,protein,rutin and total flavonoids content,and the treatment T4（slow-release fertilizer∶organic fertilizer=1∶2）proportional application couldan significantly improve the yield and quality of buckwheat.

Key words: Slow release fertilizer, Organic fertilizer, Buckwheat, Yield, Quality