【摘要】 采用最优混合"311"设计方法,研究人工栽培甘草的最优混合施肥,为甘草优质高产提供施肥依据。研究结果表明,宁夏中部干旱带沙地土壤上氮、磷、钾对三年栽培甘草产量影响大小为:施磷>施氮>施钾;因子互作效应对产量影响大小顺序为氮钾互作效应(正效应)大于氮磷互作效应(负效应)大于磷钾互作效应(负效应);宁夏中部干旱带沙地土壤人工栽培(三年生,干货)甘草商品草产量大于6000kghm-2以上的农艺措施为:施纯N151.5～171kghm-2、施纯P2O564.5～88.5kghm-2、施纯K2O67.5～106.5kghm-2。更多还原

【Abstract】 The results showed that in sand soil of the central section of arid regions of Ningxia, influence of fertilization N, P and K on the yields of 3-year-old cultivation licorice was:P >N>K. Influence of interdependent effects on the yields was:NK(positive)> NP(negative)> PK (negative). the suitable fertilization measures for licorice with the yield of more than 6000 kg hm-2 were: applying N 151.5-171 kg hm-2 , P2O5 64.5-88.5 kg hm-2 and K2O 67.5-106.5 kg hm-2 .更多还原