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Because phosphorus has many effects on plants, most of the flowers are dark green when the phosphorus is deficient, and the growth of the plants is blocked. In order to better improve the plant's resistance to stress, it is necessary to properly and rationally apply phosphate fertilizer, as follows:
1. Phosphorus application at seedling stage: The phosphorus absorption of crops is the fastest at the seedling stage, and if the phosphorus deficiency occurs at the seedling stage, it will affect the later growth.
2. Screening and applying phosphorus: Superphosphate is easy to absorb moisture and agglomerate during storage. When applied, it should be broken and sieved to facilitate root absorption.
3. Concentrated phosphorus application: Phosphorus is easily fixed by iron, aluminum and calcium in the soil, so it should be applied at the point or strip, so that the phosphorus is fixed around the seed or root system or the phosphorus and soil are adjusted into mud to be the root of the flower seedling. It is beneficial to the absorption of plant roots and improve the survival rate and stress resistance of plants.
4. Mixed application of phosphorus and organic fertilizer: especially calcium-magnesium-phosphorus fertilizer must be mixed with organic fertilizer, which can convert the insoluble phosphorus in the phosphate fertilizer into effective phosphorus that can be utilized by plants. Because the phosphorus fertilizer is mixed in the organic fertilizer, it can be reduced with the soil. The contact, thereby increasing the fertilizer efficiency of the phosphate fertilizer.
5. Layered phosphorus application: Due to the mobility of phosphate fertilizer in the soil, phosphate fertilizer should be applied to the bottom layer and the superficial layer. Generally 10 kg is applied per mu.
6. Mixed use of nitrogen and phosphorus: mixed application of nitrogen fertilizer and phosphate fertilizer can balance nutrients, promote the rooting of crop roots, and lay a foundation for the growth of flower seedlings.
7. Spraying outside the root: When the plant reaches the late stage of growth, the roots are aging, the ability to absorb nutrients is weakened, and phosphorus deficiency is often caused. At this point, water soluble potassium perphosphate can be sprayed onto the leaves to allow the phosphorus to enter the plant through the pores or stratum corneum on the leaves. Flowers can be applied at a concentration of 1% to 3% on a sunny morning or evening.
8. Appropriate amount of phosphorus: Phosphate fertilizer has long effect, and the base fertilizer can be used for 2 to 3 crops at a time. Generally, it is not necessary to apply phosphate fertilizer to each crop, so one or two years of base fertilizer can be applied once. At the same time, according to different plant and soil fertility, the applicable amount should be calculated to ensure the balance of nitrogen, phosphorus and potassium nutrients.
9. Phosphorus application to the soil: Phosphate fertilizers such as superphosphate are acidic fertilizers, suitable for application in neutral and alkaline soils, and calcium, magnesium and phosphorus fertilizers are preferably applied in acidic soils.
10. Can not be mixed with alkaline fertilizer: grass ash, lime, etc. are alkaline substances, if mixed with phosphate fertilizer, the effectiveness of phosphate fertilizer will be significantly reduced, generally should be applied 7 to 10 days later.
How to rationally apply phosphate fertilizer
Phosphorus is an important component of plant cell nucleus. It plays an important role in cell division and differentiation and development of plant organs and tissues, especially flowering and fruiting. It is an indispensable element of physiological metabolic activities in plants. Phosphorus is mainly concentrated in the seeds of plants in plants, and more phosphorus is stored in the seeds, which is beneficial to the healthy growth of the early stage of the seedlings. Phosphorus also has a good effect on improving plant resistance, cold resistance and drought resistance. Phosphorus also has the effect of promoting root development, especially the development of lateral roots and fine roots.
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