Three fertilizers can be used as seed fertilizer
Fertilizers with high concentration, over-acidity, over-alkali or toxic substances and high-temperature fertilizers should not be used as seed fertilizers. Generally, quick-acting fertilizers or good-quality farmyard fertilizers are used as seed fertilizers. There are several types of fertilizers that can be used for fertilizer production:
Ammonium sulfate: referred to as ammonium sulfate. When growing fertilizers, avoid excessive contact with seeds when planting fertilizers. Seed dressing is an economical and effective method of fertilizer application (2.5 kg per acre), but it is necessary to ensure that the seed and ammonium sulfate are in a dry state, and that they are not allowed to stay for a long time.
Superphosphate: Short calcium. When the application of calcium carbide first finely sifted, it is best to mix with high-quality fertilizer, to avoid contact with seedlings and calcium seedlings phenomenon. The amount of fertilization per mu is preferably 5 to 10 kg.
Heavy calcium phosphate: referred to as heavy calcium. When used as a fertilizer, the fertilizing amount of 2.5 to 5 kg per mu is appropriate. Since heavy calcium does not contain calcium sulfate, the effect of fertilizing sulfur-loving crops (such as potato and legume crops) is lower than that of ordinary calcium. In addition, the effect of applying in alkaline soil is not as good as that of ordinary calcium.
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