Journal of Northern Agriculture ›› 2019, Vol. 47 ›› Issue (3): 85-90.doi: 10.3969/j.issn.2096-1197.2019.03.16

• Soil and fertilizer·Plant protection • Previous Articles     Next Articles

Effects of humic acid water soluble fertilizer on root growth and yield quality in Astragalus membranaceus var. mongholicus

GUO Yan1, SHENG Jinhua1, ZHANG Xiongjie2, LIU Jie1, LI Xiaoji1   

  1. 1.College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2.Inner Mongolia Horizon Oasis Research Center of Characteristic Biologic Resource,Hohhot 010018,China
  • Received:2019-05-05 Online:2019-06-20 Published:2019-12-10

Abstract: To explore the effects of humic acid on root growth and yield quality of Astragalus membranaceus var. mongholicus under different densities,we set humic acid water soluble fertilizer under high,medium and low planting density treatments.The results showed that as the density increased,the relative content of chlorophyll in the leaves was reduced and the decreased range was increased,leaf water use efficiency,root diameter,root surface area and volume decreased,but the effective components of calycosin content increased.Humic acid treatment significantly increased the relative chlorophyll relative content,leaf water use efficiency,root surface area and volume,yield and effective components at high and medium densities.Compared with the control,the yields increased by 8.6% and 7.1%,respectively,and the contents of Calycosin increased by 0.016 and 0.013 percentage points respectively in the medium and high densities after humic acid treatment.

Key words: Astragalus membranaceus var. mongholicus, Density, Humic acid, Yield, Effective components

CLC Number: 

  • S141