| 党参氮磷钾施肥效应与最优施肥量研究 |
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| 引用本文： | 胡佳栋,武子丁,刘子哲,李雯君,王二欢,梁宗锁,董娟娥.党参氮磷钾施肥效应与最优施肥量研究[J].植物营养与肥料学报,2019,25(9):1615-1622. |
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| 作者姓名： | 胡佳栋 武子丁 刘子哲 李雯君 王二欢 梁宗锁 董娟娥 |
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| 作者单位： | 1.西北农林科技大学生命科学学院，陕西杨凌 712100 |
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| 基金项目： | 陕西省社会发展科技攻关项目（2016SF-359）；陕西步长制药有限公司校企合作项目。 |
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| 摘 要： | 目的利用数学模型研究氮、磷、钾不同配比对党参产量以及有效成分含量的影响，以确定试验区党参的施肥模式和最优的氮磷钾配比，为党参规范化栽培提供依据。方法采用氮、磷、钾三因素二次D-饱和最优设计，进行了田间试验，建立了氮、磷、钾的施肥量编码值与党参根产量、党参炔苷含量以及党参多糖含量的效应函数。结果氮、磷、钾肥对党参产量的影响大小依次为氮 > 钾 > 磷；氮、磷、钾肥对党参炔苷含量的影响为磷 > 氮 > 钾；氮、磷、钾肥对党参多糖含量的影响为磷 > 钾 > 氮。寻优结果表明，目标产量在2100～2500 kg/hm2范围内，95%的置信区间所对应的优化施肥量为N 128.4～174.1 kg/hm2、P2O5 49.26～80.41 kg/hm2、K2O 45.31～70.42 kg/hm2；炔苷含量高于0.75 mg/g，95%的置信区间所对应的优化施肥量为N 128.5～196.6 kg/hm2、P2O5 77.09～118.0 kg/hm2、K2O 41.34～53.72 kg/hm2；多糖含量高于22.50%，95%的置信区间所对应的优化施肥量为N 96.04～141.6 kg/hm2、P2O5 61.53～88.33 kg/hm2、K2O 40.22～75.83 kg/hm2。结论党参高产优质高效栽培最优施肥量为N 128.5～141.6 kg/hm2、P2O5 77.09～80.41 kg/hm2、K2O 45.31～53.72 kg/hm2，N、P2O5、K2O的最优施肥量配比为1∶0.54～0.63∶0.32～0.42。
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| 关 键 词： | 党参 产量 党参炔苷 党参多糖 效应函数 最优施肥组合 |
| 收稿时间： | 2018-09-12 |
Effects and optimum rate of nitrogen,phosphorus and potassium fertilization for Codonopsis pilosula |
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| HU Jia-dong,WU Zi-ding,LIU Zi-zhe,LI Wen-jun,WANG Er-huan,LIANG Zong-suo,DONG Juan-e.Effects and optimum rate of nitrogen,phosphorus and potassium fertilization for Codonopsis pilosula[J].Plant Nutrition and Fertilizer Science,2019,25(9):1615-1622. |
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| Authors: | HU Jia-dong WU Zi-ding LIU Zi-zhe LI Wen-jun WANG Er-huan LIANG Zong-suo DONG Juan-e |
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| Institution: | 1.College of Life Sciences, Northwest A&F University, Yangling 712100, China |
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| Abstract: | ObjectivesThe effects of nitrogen, phosphorus and potassium on the growth and bioactive component contents of Codonopsis pilosula were studied, and the optimum rates of N, P and K were proposed using mathematical model, in order to ensure reasonable fertilization for standardized cultivation of Codonopsis pilosula.MethodsUsing three?factor D?saturation optimal design, a field experiment was conducted. The effect functions of nitrogen, phosphorus and potassium application codes on the yield, lobetyolin and polysaccharide of Codonopsis pilosula were established, and the optimum rates were calculated by the models.ResultsThe effect of N, P2O5 and K2O on yield is N > K2O > P2O5, on lobetyolin content is P2O5 > N > K2O, and on polysaccharide is P2O5 > K2O > N. From the results of the frequency analysis, the optimal fertilizer application rates of N, P2O5 and K2O were respectively 128.4?174.1, 49.26?80.41 and 45.31?70.42 kg/hm2 for the target yield between 2100 and 2500 kg/hm2 and confidence interval 95%, and 128.5?196.6, 77.09?118.0 and 41.34?53.72 kg/hm2 for the lobetyolin content over 0.75 mg/g and confidence interval 95%, and 96.04?141.6, 61.53?88.33 and 40.22?75.83 kg/hm2 for the polysaccharide content over 22.50% and confidence interval 95%.ConclusionsThe optimal fertilizer application rates for both high yield and high quality of Codonopsis pilosula are N 128.5?141.6, P2O5 77.09?80.41 and K2O 45.31?53.72 kg/hm2, respectively, and the corresponding fertilizer ratio of N:P2O5:K2O is 1:0.54?0.63:0.32?0.42. |
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