SICHUAN UNIWELL BIOTECHNOLOGY CO.,LTD. , https://www.uniwellbio.com
1. Early application of crops to absorb phosphorus at the seedling stage is the fastest, accounting for half of the total phosphorus absorbed during the growing season. If phosphorus deficiency at the seedling stage will affect later growth, even if it is supplemented later, it will be difficult to recover the loss of phosphorus. No phosphorus deficiency at seedling stage.
2. Superfine calcium superphosphate is easy to absorb moisture and agglomerate when it is stored. When it is applied, it must be smashed and sifted in order to absorb the root system.
3. Phosphorus concentrate is easily immobilized by iron, aluminum, and calcium in the soil. Therefore, the application of acupuncture points and strips to fix the phosphorus around the seeds and roots can reduce the fixation with the surrounding soil and facilitate root absorption.
4. Mixed application of organic fertilizer with phosphate fertilizer, especially calcium magnesium phosphate fertilizer and organic fertilizer, can make those insoluble phosphate in phosphate fertilizer into effective phosphorus for crops.
5. Stratified phosphate fertilizers have a low mobility in the soil, and where they are applied is basically where they cannot be shown. Therefore, the application of phosphate fertilizer in the bottom layer and the shallow layer is to apply the phosphate fertilizer in the shallow layer, which is beneficial to the absorption of the seedlings, thereby promoting the return to the early morning and the fast delivery. Generally, 20--40 kg of phosphate fertilizer is applied per acre, one third of the shallow layer is applied, and two thirds of the deep layer is applied.
6. The application of nitrogen fertilizers to crops to absorb a variety of nutrients has a certain proportion, if the imbalance is not good. Single application of nitrogen fertilizer, root development is not good, easy lodging, but also vulnerable to pests and diseases, but also to accelerate the excessive disappearance of nitrogen in the soil, causing imbalance in the ratio of nitrogen and phosphorus. The combined use of nitrogen and phosphorus can balance nutrients, but also promote the root bar, lay the foundation for high yield.
7. After the roots are sprayed on the crops to the late growth stage, the roots are gradually aging and the ability to absorb nutrients is weakened, often causing phosphorus deficiency. At this time, water-soluble superphosphate can be sprayed on the leaves of the crops so that phosphorus can enter the plants through the pores or stratum corneum of the leaves. Cereal crops can be used at concentrations of 1-3%, and vegetables can be sprayed at 1% concentration on sunny mornings or evenings.
8. Phosphorus is applied to soils that are deficient in phosphorus, such as red soil, yellow mud fields, duck muddy mud fields, and cold-water immersed fields. Phosphorus fertilizers increase production significantly. Fertilizers and pastures where large quantities of phosphate fertilizer was continuously applied in past years can be applied in small quantities.
How to use phosphate fertilizer
Phosphorus in the soil cannot generally meet the needs of crops and must be supplemented by fertilization. However, phosphorus has its temperament that is only followed by its temper.