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当前位置: 首页 > 文章 > 蒙古黄芪对N、P、K的肥效响应 西北农业学报 2017 (12) 1845-1852
Position: Home > Articles > Response of N,P,K Nutrition Application to Astragalus mongholicus Acta Agriculturae Boreali-occidentalis Sinica 2017 (12) 1845-1852

蒙古黄芪对N、P、K的肥效响应

作  者：
高星;林云;王渭玲;杨江峰;李星星;高青鸽
单  位：
西北农林科技大学生命科学学院;西北农林科技大学资源环境学院
关键词：
蒙古黄芪;施肥;品质;主成分分析
摘  要：
采用三因素二次D-饱和最优设计,研究N、P、K及其配比对沙地1a生蒙古黄芪的株高、根长、根直径、根干质量等生物学特性及皂苷、黄酮、多糖次生代谢物和Fe、Mn、Cu、Zn微量元素质量分数的影响,利用主成分分析其最佳施肥用量。结果表明:氮肥有助于黄芪株高的增高,但施肥量过高黄芪株高反而降低,以氮钾配施处理(N2K2)的株高最高,较对照增加51.93%;磷肥和钾肥能促进根的生长发育,其中氮、磷、钾施肥量分别为79.41、150和225kg/hm~2处理(N1P3K3)的效果最佳,其根直径与根干质量分别较对照增加58.42%和43.87%。施肥能显著提高蒙古黄芪皂苷和多糖的质量分数,以氮、磷、钾施肥量分别为225、150和79.41kg/hm~2处理(N3P3K1)的效果最好,其皂苷和多糖的质量分数分别较对照增加118.52%和13.14%;单施氮肥(N3)和单施磷肥处理(P3)均不利于黄酮的积累,其黄酮质量分数分别较对照降低7.56%和6.46%。对于微量元素,施肥能促进黄芪Mn的积累,对Cu、Zn影响不大,单施钾肥处理(K3)使得黄芪Fe元素质量分数降低。此外,结合蒙古黄芪的次生代谢物及微量元素的主成分分析,最终得出该地区蒙古黄芪的最佳施肥用量为氮(N)、磷(P2O5)、钾(K)分别为79.41、150和225kg/hm~2。
译  名：
Response of N,P,K Nutrition Application to Astragalus mongholicus
作  者：
GAO Xing;LIN Yun;WANG Weiling;YANG Jiangfeng;LI Xingxing;GAO Qingge;College of Life Sciences,Northwest A&F University;College of Resources and Environment,Northwest A&F University;
关键词：
Astragalus membranaceus(Fisch.)Bge. var. mongholicus(Bge.)Hsiao;;Fertilization;;Quality;;Principal component analysis
摘  要：
The purpose of this paper is to study the effects of fertilization on growth and internal quality of Astragalus membranaceus(Fisch.)Bge.var.mongholicus(Bge.)Hsiao and provide the optimum fertilization.The results showed that the application of nitrogen fertilizer at an appropriate rate was advantageous to the increase of shoot height,however,excess nitrogen fertilization could decrease the shoot height.The shoot height of N2 K2 treatment was highest,which was 51.93% higher than that of the control.The application of phosphate fertilizer and potassium fertilizer could promote the growth and development of root,and the treatment of N1 P3 K3 was the best,its root diameter and root dry mass were 58.42% and 43.87% higher than the control.Fertilization significantly increased the mass fraction of saponin and polysaccharide,and the treatment of N3 P3 K1 was the optimal,which its mass fraction of saponin and polysaccharide were 118.52% and 13.14% higher than those of the control.However,the N3 and P3 treatment were not conducive to the accumulation of flavone,and their flavone mass fraction were 7.56% and 6.46% lower than control,respectively.Fertilization could promote the accumulation of Mn,and had no much effect on Cu and Zn.Besides,the K3 treatmentresulted in lower Fe mass fraction.Comprehensively considering the principal component analysis of secondary metabolites and trace elements,eventually we determined the optimum fertilizer treatment in the region was that the mass fraction of urea,calcium superphosphate and potassium phosphate were 74.91 kg/hm~2,150 kg/hm~2 and 225 kg/hm~2,respectively.

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