Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (29): 47-55.doi: 10.11924/j.issn.1000-6850.casb2020-0698

Special Issue: 生物技术

Previous Articles     Next Articles

Influence of Different Substrate Proportions on the Growth and Physiology of C.companulata ‘Youkou’ Seedlings in Containers

Yu Han1(), Ou Jing1(), Yang Xiaoyan1, Zhang Fengquan2   

  1. 1College of Forestry, Guizhou University, Guiyang 550025
    2Guiyang Qianhe Landscape Company, Guiyang 550025
  • Received:2020-11-23 Revised:2021-04-30 Online:2021-10-15 Published:2021-10-29
  • Contact: Ou Jing E-mail:737754209@qq.com;coloroj@126.com

Abstract:

To screen out the best substrate proportion which is suitable for the growth of C.companulata ‘Youkou’ container seedlings and improve the growth quality of Guiyang cherry blossom transplant container seedlings, peat, perlite, vermiculite, and yellow clay were used as the raw materials, and 4 mixed substrates were configured in certain proportions. The experiment set the yellow soil as the control, a 35 cm × 35 cm× 30 cm non-woven bag was selected as the seedling container, and the annual C.companulata ‘Youkou’ grafted seedlings introduced to Guiyang were tested to determine the physical and chemical properties of the soil, and the growth and physiological response of C.companulata ‘Youkou’ to different substrate proportions, and the correlations of the measurement indicators were analyzed. The results show that the mixed substrate has a smaller soil bulk density, greater porosity and strong sustainability of soil nutrients than the yellow soil, which is conducive to the plant seedling height, ground diameter and the accumulation of biomass; the mixed substrate could promote the formation of photosynthetic pigments in C.companulata ‘Youkou’, enhance photosynthetic efficiency and promote the accumulation of photosynthetic products, the physiological indicators are better than those of the yellow soil control. Correlation analysis shows that there is a strong correlation between the seedling height, ground diameter, biomass, chlorophyll content, actual light quanta, soluble sugar and soluble protein of the C.companulata ‘Youkou’. The experiment shows that T4 (peat soil: vermiculite: perlite: yellow soil=3:2:1:1) is the best substrate proportion for the cultivation of C.companulata ‘Youkou’ container seedlings introduced to Guiyang.

Key words: substrate proportions, C.companulata ‘Youkou’, growth condition, physiological response, container seedling

CLC Number: