王占红,王瑾,朱伍凤,蒋花,张小燕,张跃进.杨凌地区黄精氮磷钾优化施肥模式研究[J].干旱地区农业研究,2012,30(3):143~148
杨凌地区黄精氮磷钾优化施肥模式研究
Study on the optimization models of nitrogen, phosphorus and potassium application for Potygonatum.sibiricum Red. production in Yangling
  
DOI：10.7606/j.issn.1000-7601.2012.03.25
中文关键词:  黄精  优化施肥  产量  多糖含量  效应函数
英文关键词:Polygonatum. sibiricum Red.  optimization of fertilization  yield  polysaccharide  effect function
基金项目:校企合作项目“黄精GAP基地建设项目”（2008BC-01）
作者单位
王占红 西北农林科技大学生命科学学院,陕西 杨凌 712100 
王瑾 西北农林科技大学生命科学学院,陕西 杨凌 712100 
朱伍凤 西北农林科技大学生命科学学院,陕西 杨凌 712100 
蒋花 西北农林科技大学农学院,陕西 杨凌 712100 
张小燕 西北农林科技大学农学院,陕西 杨凌 712100 
张跃进 西北农林科技大学生命科学学院,陕西 杨凌 712100 
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中文摘要:
      采用氮、磷、钾三因素二次D-饱和最优设计,通过田间试验研究了氮、磷、钾的施肥量与黄精一年生根茎产量、多糖含量的效应函数。结果表明,氮、磷、钾肥对黄精产量的增产作用大小依次为磷肥＞钾肥＞氮肥,对多糖含量的作用大小依次为钾肥＞氮肥＞磷肥,其中磷肥为负效应,氮、钾肥为正效应。寻优结果表明,当目标产量为3500～4500 kg/hm2时,在95％的置信区间,优化施肥量为N89.74～ 136.18 kg/hm2,P2O5 121.39～ 157.16kg/hm2,K2O 61.06 ～ 92.63 kg/hm2。在多糖含量8％ ～9.5％之间,在95％的置信区间,优化施肥量为:N 103.91 ～153.65 kg/hm2,P2O5 69.5 ～ 124.27 kg/hm2,K2O 68.16 ～ 95.36 kg/hm2.黄精高产优质高效栽培的优化施肥量为:N103.91 ～ 136.18 kg/hm2,P2O5 121.39～ 124.27 kg/hm2,K2O 68.16 ～ 92.63 kg/hm2,N、P2O5、K2O的最佳比例为:1∶0.89～0.91∶0.5～0.68。
英文摘要:
      The effect functions of fertilizing amount of nitrogen, phosphorus and potassium on rbizoma yield and polysaccharide content of Polygonatum. sibiricum Red. were established by the D-saturation optimal design with three factors. The results showed that the effect of nitrogen, phosphorus and potassium on yield improvement was phosphorus>potassium>nitrogen and that on polysaccharide content was potassium>nitrogen>phosphorus, and the effeet of phos-phorus on polysaccharide content was negative, while the effect of nitrogen and potassium were positive. When the target yield was 3 500~4 500 kg hm2, the optimum fertilizing amount was 89.74~136.18 kg/hm2 for N,121.39~157.16 kg/htm2 for P2O5, and 61.06~92.63 kg/hm2K2O with 95% confidence interval. When the polysaccharide content was during 8%~9.5%, the optimum fertilizing amount was N 103.91~153.65 kg/hm2, P2O569.5~124.27 kg/hm2, and K2O 68.16~95.36 kg/hm2 with 95% confidence interval. The optimum fertilizing amount for high yield, high effi-ciency and high quality in Polygonatum. sibiricum Red. production was 103.91~136.18 kg/hm2 for N,121.39~124.27kg/hm2 for P2O5, and 68.16-92.63 kg/hm2 for K2O. The best ratio of N:P2O5:K2Owas1:0.89~0.91:0.5~0.68。
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