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Spring sowing herbs pay attention to
The Chinese herbal medicines planted or planted in the spring are generally subjected to three times of cultivating and weeding. The roots are shallow in the seedling stage and should be diligently chopped and dried to ensure that there is no weed in the field. Combining cultivating and weeding, live seedlings and seedlings are to be planted, and seedlings are to be replanted at the same time. Spring herbs grow rapidly after germination, requiring large amounts of fertilizer. In combination with cultivating and weeding, the types of forcing fertilizers, top dressings and watering amount were determined according to the growth habits and harvesting positions of each Chinese herbal medicine. The growth of stems and leaves is the mainstay. Based on the application of manure fertilizer, the amount of nitrogen fertilizer is appropriately increased. Usually, farmyard manure 1000-1500 kg per mu, cake fertilizer 30 kg, urea 5-10 kg, superphosphate 15-20 kg. Stem and leaf and whole grass herbs are mainly organic fertilizers and nitrogen fertilizers, and Chinese herbal medicines such as rhizomes and flowers and fruits should be appropriately increased with phosphorus and potassium fertilizers. Drought is prone to occur in the spring, and topdressing should be performed in conjunction with watering. For hi moist Chinese herbal medicines, pay attention to ground water, such as Pinellia, Arisaema, Houttuynia, Scutellaria barbata, and Gastrodia. The roots of Chinese herbal medicines are undeveloped and their roots are shallow.