Detailed Explanation of Key Management Techniques for Angelica sinensis During the Overwintering Period

For directly sown Angelica sinensis (Chinese angelica), in combination with topdressing before winter, cover the seedlings with manure-enriched soil or add a layer of fine soil about 1 cm thick over the seedlings to protect them from frost damage; for seedling-raised and transplanted Angelica sinensis, seedling storage work must be done well in winter; for seed-bearing Angelica sinensis, in order to improve seed yield and quality, before harvest, robust and uniform seedlings grown on high mountains or mid-mountain slopes must be selected for seed production. Afterwards, cut off the aboveground parts of the seed-bearing plants, remove all weeds, let them overwinter naturally, and keep watch frequently to prevent livestock from entering and trampling them, which would cause gaps in the seedlings. In early spring of the following year, if weeds are seen growing, they can be pulled out by hand; at this time, the root system covers the soil surface, so hoeing for weed control and fertilization must not be used, to avoid cutting the root system and hindering plant growth.