Four categories of chemical fertilizers should not be used as spring fertilizer
Fertilizer refers to the fertilizer that is applied at the same time as the sowing or mixing with the seed. Fertilizer has great influence on crop seeds. If it is properly selected, it can ensure the smooth germination of seed and vigorous growth of seedlings, but some fertilizers are not suitable for seed fertilizer. Cosmetics are compound mixtures made from various raw materials after reasonable blending and processing. There are many types of cosmetics raw materials with different properties. According to the raw material properties and uses of cosmetics, it can be roughly divided into two categories: base raw materials and auxiliary raw materials. The former is a main raw material of cosmetics, which occupies a large proportion in cosmetic formulations, and is the main functional substance in cosmetics. The latter is responsible for shaping, stabilizing or imparting color, fragrance and other characteristics to cosmetics. These substances are not used in large amounts in cosmetic formulations, but are extremely important. Cosmetics are chemical mixtures made of natural, synthetic or extracted substances with different functions as raw materials and processed through production processes such as heating, stirring and emulsification. Collagen peptide, Arbutin, Coenzyme Q10, GSH, Cosmetic Raw Materials, lipoic acid Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbio.com
The first is toxic fertilizer. Urea often contains a small amount of biuret, which is toxic to the seed and seedlings. In addition, urea molecules with a high nitrogen content penetrate into the protein molecules of the seeds, which can denature proteins and affect seed germination.
Followed by strong alkaline fertilizer. Kiln ash potassium fertilizer, steel slag phosphate fertilizer and other alkaline fertilizers are also not suitable for seed fertilizer. Potash kiln ash is highly hygroscopic and will give off a lot of heat after absorbing water, and it is easy to burn out seeds and young roots. When it is necessary to make fertilizer, it must be mixed with organic fertilizer, applied into the sowing ditch, and then sown with cover soil.
The third is fertilizer containing harmful ions. Potassium chloride, ammonium chloride and other chemical fertilizers contain chloride ions. When applied to the soil, they produce water-soluble chlorides, which are detrimental to seed germination and seedling growth. Nitrate ions contained in fertilizers such as ammonium nitrate and potassium nitrate also affect seed germination.
The fourth is a corrosive fertilizer. Ammonium bicarbonate and ammonia water are volatile and corrosive. They can easily injure seeds and seedlings. Superphosphate contains free sulfuric acid and phosphoric acid, which can cause damage to seed germination and seedling growth. Generally, it is not suitable for seed fertilizer. This kind of fertilizer can be applied under the seeding ditch or separated from the seed by a certain soil layer, or mixed with superphosphate and earth fertilizer.