Abstract:

The aim was to investigate the effect of fertilizer rate of controlled release fertilizer (CRF) on the growth, yield and quality of A. membranaceus in the mountain Taishan. Astragalus membranaceus (Fisch.) Bge was selected as the experimental material, the effect of fertilizer rate of controlled release fertilizer (CRF) on the growth, yield and quality of A. membranaceus in the mountain Taishan, were studied under field experiment. Compared with the traditional chemical fertilizer (NPK), CRFs with the equivalence nutrient content of NPK had different effects on the height of different period of growth. Remarkably, CRFs had more important effect in the middle period of growth than that of NPK. Stem diameters of A. membranaceus of CRF1, CRF2, and CRF3 were increased by 31.00%, 31.48% and 27.27% than that of traditional chemical fertilizer at the harvest time, respectively. The effect on the root cap ratio was as following: CRF1>CRF2>CK>CRF3. The contents of polysaccharide of CRF1, CRF2, and CRF3 were 1.65, 1.55 and 1.54 times than that of CK, respectively. The application of CRF could significantly improve the agronomic characteristics; increase the yield and the content of polysaccharide of A. membranaceus.