Fertilizers are applied near the seeds or mixed with the seeds when the crops are sown or planted. Generally, quick-acting fertilizers or organic fertilizers are used as base fertilizers. Attention should be paid to their application methods and application amounts. Improper application will have serious consequences for agricultural production. Causes the burning of seedlings and the failure of seedlings, and even affects the yield per unit area.
For this reason, fertilizers with high concentration, excessive acidity, over-alkali or toxic substances, and fertilizers that produce high temperatures should not be applied at the time of sowing. Fertilizers that can be used during sowing are: First, ammonium sulfate is abbreviated as ammonium sulfate, which can be applied to various crops as base fertilizer or top dressing. When fertilizer is applied, excessive contact with seeds should be avoided. Seed dressing is a cost-effective method of applying fertilizer (2.5 kg per acre) but ensure that the seed and ammonium sulfate are in a dry state and that they are kept for a long time. The second is superphosphate, also referred to as superphosphate, which is suitable for all kinds of soils, but also for all kinds of crops. It is mainly used as base fertilizer or seed fertilizer. It can be used as seed fertilizer to reduce the phosphorus fixation in soil and help young seedlings to phosphorus. Absorption. When the application of calcium carbide first finely sifted, it is best mixed with high-quality fertilizer, to avoid contact with seedlings and calcium seedlings phenomenon. The amount of fertilizer per acre of 5 to 10 kg is appropriate. Concentrate on the application of fertilizer, the amount of fertilizer per acre of 10 to 20 kilograms; spread scattered, fertilization per acre of 20 to 30 kilograms. In the limited case of phosphate fertilizers, it should first be considered as a seed fertilizer. The third is heavy calcium phosphate referred to as heavy calcium, planting time per acre Shi 2.5 ~ 5 kg 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.
Latex Gloves,Rubber Gloves,Latex Free Gloves,Rubber Hand Gloves
HOLIK ASIA GROUP CO.LTD , https://www.holikasia.com