The influence of the application amount of N,P,K and its provision on the yield of Angelical dahurica var. formosasa

The influence of the application amount of N,P,K and its provision on the yield of Angelical dahurica var. formosasa was studied through 3 years experiments. The result indicates the positive relationship between the provision of N,P,K and the yield of Angelical dahurica var. formosasa. With the ascending of the fertilizers usage, the yield is promoted. The yield of the plant to which the fertilizers are applied is higher than the one to which the fertilizers are applied singly.