Phosphate fertilizer use method

Phosphorus in the soil generally cannot meet the needs of crop growth and development and must be supplemented by fertilization. However, the method of applying phosphate fertilizer must be discussed.

First, early application of crops at the seedling stage absorbs phosphorus at the fastest rate, generally accounting for half of the total required phosphorus in the growing season. If phosphorus deficiency occurs at seedling stage, it will be difficult to recover the losses caused by phosphorus deficiency at seedling stage even if they are later supplemented. Therefore, the seedling period of crops must ensure that they cannot be deficient in phosphorus. If the lack of time to make up for it, missed opportunities can not make up for it.

Second, there is a feature of concentrated application of phosphate fertilizer, which is easily fixed by iron, aluminum, calcium and other failure. Therefore, it is advisable to apply the chemical fertilizers to the seeds and roots of crops in order to facilitate the absorption and utilization of crop roots.

Third, the application of commonly used phosphate fertilizer calcium superphosphate easily absorbs moisture during storage. Therefore, it must be sifted and sifted at the time of application, and it must not be sloppy in order to facilitate the absorption and utilization of the root system.

Fourth, the application of phosphate fertilizer layered in the soil mobility is very small, where it is applied where it does not move. Therefore, phosphate fertilizers should be applied to both the bottom layer and the shallow layer. The application of phosphorus fertilizer should be applied in 1/3 of the shallow layer and 2/3 of the deep layer in order to meet the demand of different levels of crop roots for phosphate fertilizer and to fully exert the high-quality and high-yield effects of phosphate fertilizer on crops.

V. The combination of nitrogen fertilizers and crops to absorb various types of nutrients is a certain percentage, if the proportion of imbalanced crops is not good. This is also an important reason for why balanced fertilization is advocated in current agricultural production. When nitrogen fertilizer is applied alone, the roots of the crops are not well developed, and they are prone to lodging. They are also vulnerable to pests and diseases, resulting in imbalance of nitrogen and phosphorus. The combination of nitrogen and phosphorus, combined with reasonable application, can not only balance nutrients, but also promote the down-rooting of crop roots, laying a solid foundation for high-quality and high-yield crops.

6. Phosphate fertilizers applied to crops that are sensitive to phosphorus fertilizers should be used on crops that are sensitive to phosphate fertilizers, such as beans, wheat, cotton, potatoes, and melons. In this way, the effect of phosphate fertilizer can be fully exerted, which maximizes the high-quality and high-yield effect of phosphate fertilizer and maximizes economic benefits.

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