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Study on the optimization models of nitrogen,phosphorus and potassium application for Astragalus membranaceus production
Authors
徐福利
王振
王渭玲
Publication date
1 January 2008
Publisher
Abstract
采用氮、磷、钾三因素二次D-饱和最优设计,通过田间试验建立了氮、磷、钾的施肥量编码值与膜荚黄芪根产量、多糖含量的效应函数。结果表明,氮、磷、钾肥对膜荚黄芪根产量的增产作用大小依次为氮肥>钾肥>磷肥;氮、磷、钾肥对黄芪多糖含量的作用大小依次为钾肥>磷肥>氮肥,其中钾肥为负效应,氮肥、磷肥为正效应。寻优结果表明,膜荚黄芪目标产量在6000~7000 kg/hm~2之间,95%置信区间的优化施肥量为N 66.85~102.92 kg/hm~2、P_2O_5 64.64~94.95 kg/hm~2、K_2O 119.78~166.48kg/hm~2;膜荚黄芪多糖含量在13%~14%之间,95%置信区间的优化施肥量为N 66.85~102.92kg/hm~2、P_2O_5 64.64~94.95kg/hm~2、K_2O 119.78~166.48 kg/hm~2;膜荚黄芪高产优质高效栽培优化施肥量为N 99.52~102.92kg/hm~2、P_2O_5 94.20~94.95kg/hm~2、K_2O 119.78~166.48kg/hm~2,N、P_2O_5、K_2O的最佳比例为1:0.92~0.95:1.16~1...
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018