Three kinds of fertilizers are not suitable for medicinal fertilizers

Chinese herbal medicines are special agricultural crops. If improper chemical fertilizers are used in cultivation, the phenomenon of burning buds and burning seedlings occurs easily, causing unnecessary economic losses. Therefore, it is not appropriate to use the three types of chemical fertilizers as a “species fertilizer” for Chinese herbal medicines during seed dressing. 1. Fertilizers containing toxic urea A small amount of biuret is often produced during crop production. More than 2% of the substance will poison the seeds and seedlings. In addition, high nitrogen content of urea molecules will penetrate into the protein molecular structure of medicinal seeds, so that the protein deformation, affecting the seed germination. Second, fertilizers containing harmful ions (1) potassium chloride, ammonium chloride. Such fertilizers contain chloride ions, and they produce water-soluble chlorides after application, which is detrimental to seed germination and seedling growth. (2) Ammonium nitrate and potassium nitrate. Containing nitrate ions has a great influence on the germination of seeds. Third, fertilizers containing corrosion effects such as ammonium bicarbonate and superphosphate. If such fertilizer is used as a seed fertilizer for cultivation of Chinese medicinal materials, it will cause serious damage to the seed germination and seedlings. If the soil quality is poor, it is necessary to use this kind of fertilizer, which can be applied under the ditch or the bottom layer, and then spread the seeds after sowing a layer of fine soil, and can also mix the superphosphate and the earth-fertilizer after uniform application. China Agricultural Network Editor