title: [Effects of nitrogenous phosphorus and potassium fertilizer on yield of Bupleurum scorzonerifolium].
abstract: OBJECTIVE
  To study the effect of different fertilizer assortment (nitrogenous, phosphorus and potassium) on Bupleuram scorzonerifolium yield.
  
  
  METHODS
  Three factors were designed by quadratic regression and D-optimum designation.
  
  
  RESULTS
  As far as the biomass concerned, the best design of fertilizer was N 120. 3 - 333. 3 kg/hm(2) P2O5 0-939. 45 kg/hm(2), K2O 0 - 227. 25 kg/hm(2). As to R/T, the best design was N 62. 66 -333. 3 kg/hm(2), P2O5 0 -922. 54 kg/hm(2) , K2O 0 -227. 25 kg/hm(2). And for the root weight, the best design was N 34. 5 -333. 3 kg/hm(2), P2O5, 0 -939. 45 kg/hm2 , K2O 0-227. 25 kg/hm(2).
  
  
  CONCLUSIONS
  Application quality of nitrogenous, phosphorus and potassium fertilizer are closely related with yield of B. Scorzonerifolium.
authors.affiliation: College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China. jingxj@gsau.edu.cn
authors.forename: Xiao-jun
authors.initials: XJ
authors.lastname: Jin
authors.forename: Yuan
authors.initials: Y
authors.lastname: Chen
authors.forename: Hai-ming
authors.initials: HM
authors.lastname: Lin
authors.forename: Lin-you
authors.initials: LY
authors.lastname: Zou
mesh_terms: D018533:Biomass; D029972:Bupleurum / Q000254:growth & development*; D005308:Fertilizers; D009584:Nitrogen; D010758:Phosphorus; D018517:Plant Roots / Q000254:growth & development; D010946:Plants, Medicinal / Q000254:growth & development*; D011188:Potassium; D012621:Seasons
chemical_list: D005308:Fertilizers; D010758:Phosphorus; D009584:Nitrogen; D011188:Potassium