Fertilizer refers to fertilizer applied to or mixed with seeds when planted or planted. The proper application of the fertilizer can meet the needs of the crop for nutrients, and it can save the work of topdressing and vice versa. Therefore, when applying seed fertilizer, pay attention to the following points:
Do not choose a fertilizer with corrosive effects. Ammonium bicarbonate, sleeping and volatile, corrosive, easy to smear seeds and seedlings, superphosphate containing free sulfuric acid and phosphoric acid, causing damage to seed germination and seedling growth, generally not suitable for seed fertilizer. Such fertilizers can be applied under the seeding ditch or separated from the seed by a certain soil layer, or mixed with superphosphate and soil fertilizer.
If no toxic fertilizer is selected, urea will often produce a small amount of adipic acid during the growth of the crop. If the content of the substance exceeds 20%, it will be toxic to seeds and seedlings. In addition, urea molecules with high nitrogen content penetrate into the protein molecules of the seeds, denature the proteins and affect seed germination.
Fertilizers that do not choose harmful ions. Fertilizers such as potassium amide and ammonium amide contain chloride ions. When applied to the soil, water-soluble chlorides are produced, which are unfavorable for seed germination and seedling growth. Nitrate ions contained in fertilizers such as ammonium nitrate and potassium nitrate have seed germination. influences.
Do not choose strong alkaline fertilizer. Strong alkaline fertilizers such as kiln ash potassium fertilizer and steel slag phosphate fertilizer are also not suitable for seed fertilizer. The kiln ash potassium fertilizer contains more calcium, attracts strong dominant, matures lime after water absorption, releases a lot of heat, and easily burns seeds and radicles. When it is necessary to make a seed fertilizer, it must be mixed with organic fertilizer and applied to the seeding ditch. In the case of sowing soil, damage can be avoided.
Do not choose farmer's fertilizer that is not ripe. In rural areas, manure fertilizers such as manure and manure are used as seed fertilizers. If the waste is not decomposed, a large amount of heat is released during the fermentation process, and the roots are easily burned, and ammonia is burned to burn the seedlings. Therefore, the unfertilized organic fertilizer should not be applied. After the high temperature fermentation of the pile, it can be used to make the fertilizer after fully decomposing.
Do not choose a fertilizer with corrosive effects. Ammonium bicarbonate, sleeping and volatile, corrosive, easy to smear seeds and seedlings, superphosphate containing free sulfuric acid and phosphoric acid, causing damage to seed germination and seedling growth, generally not suitable for seed fertilizer. Such fertilizers can be applied under the seeding ditch or separated from the seed by a certain soil layer, or mixed with superphosphate and soil fertilizer.
If no toxic fertilizer is selected, urea will often produce a small amount of adipic acid during the growth of the crop. If the content of the substance exceeds 20%, it will be toxic to seeds and seedlings. In addition, urea molecules with high nitrogen content penetrate into the protein molecules of the seeds, denature the proteins and affect seed germination.
Fertilizers that do not choose harmful ions. Fertilizers such as potassium amide and ammonium amide contain chloride ions. When applied to the soil, water-soluble chlorides are produced, which are unfavorable for seed germination and seedling growth. Nitrate ions contained in fertilizers such as ammonium nitrate and potassium nitrate have seed germination. influences.
Do not choose strong alkaline fertilizer. Strong alkaline fertilizers such as kiln ash potassium fertilizer and steel slag phosphate fertilizer are also not suitable for seed fertilizer. The kiln ash potassium fertilizer contains more calcium, attracts strong dominant, matures lime after water absorption, releases a lot of heat, and easily burns seeds and radicles. When it is necessary to make a seed fertilizer, it must be mixed with organic fertilizer and applied to the seeding ditch. In the case of sowing soil, damage can be avoided.
Do not choose farmer's fertilizer that is not ripe. In rural areas, manure fertilizers such as manure and manure are used as seed fertilizers. If the waste is not decomposed, a large amount of heat is released during the fermentation process, and the roots are easily burned, and ammonia is burned to burn the seedlings. Therefore, the unfertilized organic fertilizer should not be applied. After the high temperature fermentation of the pile, it can be used to make the fertilizer after fully decomposing.
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