Effects of Slow Release Compound Fertilizer on Yield and Quality of Coptis chinensis Franch

This paper was to study the effect of slow release compound fertilizer(SRF) on yield and quality of Coptis chinensis Franch.Results indicated that the biomass and root yields of Coptis chinensis Franch were significantly or markedly significantly increased by 6.3%～18.7% in 4 kinds of SRF treatments,compared to the CK.And the effect of SRF_4 and SRF_1 were the best.The effect of SRF on nutrition contents of shoot and root showed that the characteristic of N and P were identical,but K was in reverse.The nutrition rations of SRF could significantly affect on the officinal quality of different-year-old Coptis chinensis Franch.The berberine and alkaloid contents of 3-year-old and 5-year-old Coptis chinensis Franch increased in SRF_3 treatment,but those of 4-year-old Coptis chinensis Franch enhanced in SRF_4 treatment.No matter which part one of Coptis chinensis Franch,the higher N/P and N/K ration and the lower K/P ration were propitious to improve the yield and quality.