中国现代中药2017，Vol.19Issue(8)：1157-1161,5.DOI:10.13313/j.issn.1673-4890.2017.8.021
氮磷钾元素对黄芪生长和干物质积累的影响
Effects of Nitrogen, Phosphorus and Potassium on the Growth and Dry Matter Accumulation of Astragalus membranaceus
摘要
Abstract
Objective:To explore the effect of N,P and K application amountand proportion on the growth and dry matter accumulation of Astragalus membranaceus and provide a basis for standardized fertilization of Astragalus.Methods:Taking annual Astragalus membranaceus as experimental material,N,P,and K were designed with "3414" completely randomized block design and regularly watered with nutrient solution and to study the effects of nitrogen,phosphorus and potassium application amount and proportion on the growth and dry matter accumulation of Astragalus at different growth stages.Results:Processing N1 P2K2 had a better effect on Astragalus plant height,diameter and root rough;The rational application of N,P,and K can promote the growth of Astragalus and dry matter accumulation and the effect of N,P,and K on the dry matter accumulation of root of Astragaluss was P ＞ N ＞ K;At the early growth of astragalus,N,P,and K in accordance with 2∶1∶1 as base fertilizer can promote the growth of Astragalus and in the middle of August,the N,P and K fertilizers could increase the dry weight of Astragalus root by 1∶2∶1 ratio;According to regression analysis,the best application concentration of N,P and K fertilizers was 0.254,0.165,0.261 g ·L-1.Conclusion:The rational combination of N,P,and K can promote the growth and root dry matter accumulation of Astragalus,the application of N,P,K at 0.254,0.083,0.131 g ·L-1 can promote the growth of astragalus in the early stage and the accumulation of dry matter in root of Astragalus was promoted by N,P,K top dressing at 0.127,1.065,0.131 g ·L-1.关键词
黄芪/氮磷钾/生长/干物质积累Key words
Astragalus membranaceus/nitrogen, phosphorus and potassium/growth/dry matter accumulation引用本文复制引用
宋庆燕,杨相,王秋玲,夏贵惠,闫滨滨,崔旭盛,张媛,王文全..氮磷钾元素对黄芪生长和干物质积累的影响[J].中国现代中药,2017,19(8):1157-1161,5.基金项目
国家中药标准化项目子课题:恒山黄芪的种植规范和标准化研究(ZYBZH-Y-JIN-34)[工信部消费(2016)] （ZYBZH-Y-JIN-34）
