Objective: To evaluate the effect of seedingtime, density of crop and fertilization on the yield of Angelica dahurica.
Method: Use weighing method to measure the output of A. dahurica.
Result: The highest yield of seeding-time is 8373 kg/hm' on April 20, which is considerably different compared with April 5 and May 5; the highest yield of the density is 9300 kg/hm2 on 330,000 plants/hm2; the yield of fertilization tests all are considerable higher than that of the contrast.
Conclusion: The appropriate seeingtime of A. dahurica is the first or second ten days of April, the appropriate density is 330,000 plants/hm2, and the appropriate amount of fertilization is N24P20, i.e pure N 360 kg and P20, 300 kg per hectare.