Abstract:

To investigate the favorable environmental conditions for the seed germination and seeding emergence of Angelica dahurica, and to address the practical issue of the low seedling rate of emergence of Angelica dahurica in field cultivation, the simple and effective methods to enhance the rate of emergence of Angelica dahurica seeds were explored. A two-factor split-plot design was employed under field conditions. The substrates with different ratios, such as peat soil, peat soil:garden soil, and peat soil:garden soil :perlite, as well as garden soil alone, were arranged in the main plots. Seed sowing treatments with no covering, and burial depths of 1 cm, 3 cm, and 5 cm were arranged in the sub-plots. The seed germination, seeding emergence, and growth conditions of Angelica dahurica were determined with different substrates and burial depths. The results indicated that there was a significant interaction effect between different substrates and burial depths. The seed emergence and seedling growth of Angelica dahurica were significantly impacted by the substrates with different ratios. The most suitable substrates were peat soil: garden soil at a 1:1 ratio and peat soil: garden soil: perlite at a 2:2:1 ratio. Furthermore, the effect of burial depth on seed emergence was significant, and the seeding rate of emergence was the highest at 1 cm depth. When cultivating Angelica dahurica in field conditions, a 1:1 mixture of peat soil and garden soil with a burial depth of 1 cm could serve as a simple and effective method to enhance seedling emergence, promote growth, and improve soil structure.

Key words: Angelica dahurica, substrate mixture, burial depth, germination and emergence, field conditions