Effects of Leaf Spraying Nano-Fe on Soil Nutrients,Enzyme Activities,Yield and Quality of Continuous Growing Angelica sinensis
Objective To solve the problems of abuse of chemical fertilizers and continuous cropping obstacles in Angelica sinensis pro-duction,the effects of nano-Fe on soil nutrient content,enzyme activity,yield and pharmacodynamic composition of Angelica sinensis were studied,so as to provide a basis for its rational application in Angelica sinensis cultivation.Methods The activities of related en-zymes in A.sinensis rhizosphere soil,soil and root nutrient content,the number of adventitious roots,rhizosphere diameter,rhizosphere length,main root length and fresh weight per plant,and the content of pharmacodynamic components were determined.Results Nano-Fe significantly increased the activities of FDA hydrolase,soil urease,soil sucrase and soil alkaline protease in A.sinensis rhizosphere soil at different stages,and decreased the activity of soil alkaline phosphatase.The activity of soil catalase was significantly increased in the late stage of enlargement and growth(S2),and the activity of soil β-glucosidase was significantly increased in the vigorous growth stage(S1).Nano-Fe significantly increased the contents of soil available potassium,ammonium nitrogen,nitrate nitrogen,total iron and protein,sucrose,ammonium nitrogen and nitrate nitrogen in different stages,and significantly increased the number of adventitious roots,rhizosphere diameter,rhizosphere length,main root length,average fresh weight per plant and the contents of ferulic acid,conifer-ous ferulic acid,asiaticoside A and Z-swertia lactone in Angelica sinensis.Conclusion Nano-Fe can promote the rhizosphere soil car-bon and nitrogen cycling by regulating soil enzyme activity,improve soil nutrient supply capacity,increase nutrient content in soil and root of A.sinensis,and promote the yield and quality of A.sinensis.
Angelica sinensisNano-Fesoil enzyme activityCarbon and nitrogen cycleNutrientquality
万方数据
维普
