论文部分内容阅读
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。
Optimum mixed “311” design method was used to study the optimal mixed fertilization of artificial cultivation of licorice and provide fertilization basis for the high yield and quality of licorice. The results showed that the effects of N, P and K on the yield of three-year cultivation of licorice in the sandy land of central Ningxia were as follows: phosphorus application> application of nitrogen> application of potassium; the order of effect of factor interaction on yield was nitrogen-potassium interaction The effect (positive effect) is greater than the interaction effect between nitrogen and phosphorus (negative effect) is greater than the interaction effect of phosphorus and potassium (negative effect); Ningxia middle arid sandy land artificial cultivation of soil (three years, dry goods) licorice more than 6000kg The agronomic measures were as follows: applying pure N151.5 ~ 171kghm-2, applying pure P2O564.5 ~ 88.5kghm-2 and applying pure K2O67.5 ~ 106.5kghm-2.