Three types of fertilizer that should not be applied when growing Chinese medicinal herbs

Fertilizer is an indispensable and important material for the growth of medicinal crops. It plays a leading role in promoting their growth and development and improving yield and quality, but rational fertilization must be observed, and the fertilization methods used for other crops must not be copied or applied indiscriminately. Chinese medicinal herbs should not use three types of fertilizer.

1. Fertilizers with toxic effects. Mainly urea, which is the most widely used in crop production. During crop production, urea often produces a small amount of biuret; if this content exceeds 2%, it is toxic to seeds and seedlings.

2. Fertilizers containing harmful ions. One type is potassium chloride and ammonium chloride. Such chemical fertilizers contain chloride ions, and after application they produce water-soluble chlorides, which are unfavorable to seed germination and seedling growth. Another type is ammonium nitrate and potassium nitrate. Because they contain nitrate ions, they greatly affect seed germination.

3. Fertilizers with corrosive effects. Such as ammonium bicarbonate and superphosphate. If such chemical fertilizers are used as seed fertilizer when cultivating Chinese medicinal herbs, they will harm both seed germination and seedlings. If the soil is poor and such fertilizer must be used, it can be applied under the furrow or at the bottom layer, covered with a layer of fine soil, and then the medicinal herb seeds sown; superphosphate can also be mixed evenly with soil and farmyard manure before application. When growing Chinese medicinal herbs, direct contact between such chemical fertilizers and medicinal herb seeds or seedlings should be avoided.

(For more knowledge on medicinal herb cultivation, follow the Kangmei Chinese Medicine Network WeChat platform: kmzyw518)