Abstract:

The Effects of different seeding periods and plant densities on Yield and Main Agronomic Characters of Saussurea lappa in Yunnan were studied in order to provide scientific basis for GAP cultivation techniques. Designing five seeding periods of 3/15 (A1,month/day), 3/25 (A2, month/day), 4/5 (A3, month/day), 4/15 (A4 ,month/day), 4/25 (A5), Designing five planting densities of 30×10 cm(B1), 30×20 cm(B2), 30×30 cm(B3), 30×40 cm(B4), 30×50 cm(B5) by random arrangement. The results showed that the effects of seeding periods and plant densities on yield and main agronomic characters of Saussurea lappa in Yunnan were obvious; the yield of A3, A4 and B2, B3 were higher ,the main agronomic characters of A3, A4 and B2、B3 were good. A3B2, A3B3, A4B2 and A4B3 were the preferable treatment combinations. The suitable seeding periods of Saussurea lappa in YunNan were in early and middle of April. The suitable plant densities of Saussurea lappa in YunNan were 30×20 cm (B2), 30×30 cm (B3).