Research progress on the effects of different fertilizer types on yield and quality of Astragalus membranaceus
Irregular fertilization is often found in Radix Astragali cultivation,which seriously affects its quality. We have outlined the effects on the yield and quality of Astragalus membranaceus for different fertilizer types (nitro-gen fertilizer,microbial fertilizer,organic fertilizer,bacterial fertilizer,specialized fertilizer,and controlled release fertil-izer). And find that the reasonable application of different types of fertilizer can improve the yield and quality of A. membranaceus to different degrees,but the demand for fertilizer in different producing areas is quite different,among which the nitrogen fertilizer is 30~546.9 kg/hm2;microbial fertilizer:2.25~75 kg/hm2;organic fertilizer:1500~7500 kg/hm2;bacterial fertilizer:1.2~606 kg/hm2;organic-inorganic application:8 kg/hm2+0.4 kg/hm2~2400 kg/hm2+600 kg/hm2;specialized fertilizer:1050~4500 kg/hm2;controlled release fertilizer:300~500 kg/hm2.The reasons are mainly related to soil fertility,regional ecological environment,fertilizer formula and pro-duction target,etc.Lastly,it is suggested to formulate a scientific and effective fertilization program,which should con-sider soil quality of the fields,and combine various factors such as production objectives. Overall,this review aims to provides insights on improving the proper application of fertilizers in the cultivation of A. membranaceus.