Effects of different fertilizers on soil nutrient changes in Angelica sinensis

【Objective】To elucidate the effect of different fertilizers on soil nutrients and uptake of Angelica sinensis,and to provide a scientific basis and important reference for rational fertilization and ecological planting of A.sinensis.【Method】Seven different fertilizersT₁ （diammonium phosphate 750 kg/hm~2）,T₂ （bacterial manure 2 250 kg/hm~2）,T₃（bacterial manure 2 250 kg/hm~2+organic fertilizer 6 000 kg/hm~2）,T₄（organic fertilizer 12 000 kg/hm~2）,T₅ （organic fertilizer 18 000 kg/hm~2）,T₆（organic fertilizer24 000 kg/hm~2） and T₇ （organic fertilizer 30 000 kg/hm~2）were designed on the basis of chemical fertilizer,bacterial manure and organic fertilizer without fertilization as the control （CK） and the soil nutrients （total N,P and K,alkali-hydro N,available P and K,soil organic matter and pH value） were determined at the harvest stage.【Result】There were significant effects of different fertilizers on soil nutrient changes of A.sinensis.The alkali-hydro N,available P,total K and available K decreased by 66.5%,63.1%,0.85%and12.3%respectively under the CK.The soil organic matter decreased by 17.6%while the N,P and K were opposite under T₁ treatment.The total N and K,available K and soil organic matter decreased by 17.3%,4.98%,52.1%and 5.29%respectively while the P was opposite under T₂ treatment.The total N and P,available P and K,and soil organic matter decreased by 17.5%,11.5%,60.4%,7.16%and 14.8%under the T₃ treatment,respectively.In general,the uptake of total N and alkali-hydro N were significantly decreased,while the uptake of total P and K,available P and K,and soil organic matter were significantly increased with the increase of organic fertilizer application （T₄ to T₇）.The pH value increased in the CK,T₄ to T₇ treatments,while it decreased in the T₁ to T₃ treatments.【Conclusion】The T₃ treatment （bacterial manure 2 250 kg/hm~2+organic fertilizer 6 000 kg/hm~2） is the most favorable for to the absorption and utilization of soil nutrients by A.sinensis,which can be promoted and applied in the planting and cultivation of A.sinensis.