title: [Effects of Chemical Fertilizers and Organic Fertilizer on Yield of Ligusticum chuanxiong Rhizome].
abstract: OBJECTIVE
  To study the effects of different N, P, K and organic fertilizer (OF) on yield of Ligusticum chuanxiong rhizome, in order to provide the theoretical foundation for the establishment of standardization cultivation techniques.
  
  
  METHODS
  The field plot experiments used Ligusticum chuanxiong rhizome which planted in Pengshan as material, and were studied by the four factors and five levels with quadratic regression rotation-orthogonal combination design. According to the data obtained, a function model which could predict the fertilization and yield of Ligusticum chuanxiong rhizome accurately was established.
  
  
  RESULTS
  The model analysis showed that the yields of Ligusticum chuanxiong rhizome were significantly influenced by the N, P, K and OF applications. Among these factors, the order of increase rates by the fertilizers was K > OF > N > P; The effect of interaction between N and K, N and OF, K and OF on the yield of Ligusticum chuanxiong rhizome were significantly different. High levels of N and P, N and organic fertilizer, K and organic fertilizer were conducive to improve the yield of Ligusticum chuanxiong rhizome. The results showed that the optimal fertilizer application rates of N was 148.20 - 172.28 kg/hm2, P was 511.92 - 599.40 kg/hm2, K was 249.70 - 282.37 kg/hm2, and OF was 940.00 - 1 104.00 kg/hm2.
  
  
  CONCLUSIONS
  N, P, K and OF obviously affect the yield of Ligusticum chuanxiong rhizome. K and OF can significantly increase the yield of Ligusticum chuanxiong rhizome. Thus it is suggested that properly high mount of K and OF and appropriate increasing N are two favorable factors for cultivating Ligusticum chuanxiong.
authors.forename: Qin
authors.initials: Q
authors.lastname: Liang
authors.forename: Xing-fu
authors.initials: XF
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Meng
authors.forename: Shi-ming
authors.initials: SM
authors.lastname: Peng
mesh_terms: D000383:Agriculture / Q000592:standards*; D004365:Drugs, Chinese Herbal; D005308:Fertilizers; D030004:Ligusticum / Q000737:chemistry*; D008962:Models, Theoretical; D009584:Nitrogen / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry; D011188:Potassium / Q000737:chemistry; D027343:Rhizome / Q000737:chemistry; D012987:Soil / Q000737:chemistry
chemical_list: D004365:Drugs, Chinese Herbal; D005308:Fertilizers; D012987:Soil; D009584:Nitrogen; D011188:Potassium