It is not suitable to apply three kinds of fertilizer to traditional Chinese medicine.

Fertilizer is an indispensable important substance for the growth of medicinal crops, which plays a leading role in promoting its growth and development, improving yield and quality, but attention must be paid to rational fertilization and should not be applied or applied indiscriminately by the fertilization methods of other crops. Three kinds of fertilizers should not be used in traditional Chinese medicine.

First, fertilizers containing toxic effects. It is mainly urea which is most widely used in crop production. Urea often produces a small amount of biuret in the process of crop production, which is toxic to seeds and seedlings if the content is more than 2%.

Fertilizers containing harmful ions. One is potassium chloride, ammonium chloride. This kind of chemical fertilizer contains chloride ion, which will produce water-soluble chloride after application, which is disadvantageous to seed germination and seedling growth. The other is ammonium nitrate and potassium nitrate. Because it contains nitrate ion, it has a great influence on seed germination.

Third, fertilizer containing corrosion. Such as ammonium bicarbonate and superphosphate. If this kind of chemical fertilizer is used as seed fertilizer for the cultivation of traditional Chinese medicine, it will do harm to seed germination and seedlings. If the soil is of poor quality, this kind of fertilizer can be applied under the ditch or bottom, covered with a layer of fine soil before sowing medicinal seeds, or calcium superphosphate can be evenly mixed with soil fertilizer and applied. When planting Chinese medicinal materials, direct contact between such fertilizers and the seedlings of medicinal seeds should be avoided.

(for more knowledge about the planting of medicinal materials, please follow the Wechat platform of Kangmei traditional Chinese Medicine website: kmzyw518)