Phosphate fertilizer should be applied to crops that are most sensitive to their response. These crops are beans, rapeseed, wheat, cotton, potato, melon, etc., and the application of phosphate fertilizer can obtain higher economic benefits.
Early application: Crops absorb phosphorus at the seedling stage, accounting for half of total phosphorus in the growing season. If the phosphorus deficiency in the seedling stage will affect the later growth, it is difficult to recover the loss of early phosphorus deficiency even if it is replenished later, so the phosphorus can not be lost in the seedling stage.
Fine application: Superphosphate is easy to absorb moisture and agglomerate during storage. When applied, it should be broken and sieved to facilitate root absorption.
Concentrated application: Phosphorus is easily fixed by the fixation of iron, aluminum, calcium and other elements in the soil. Therefore, the application should be carried out at a point and the application of phosphorus should be carried out around the seeds and roots. This can avoid the fixation of iron, aluminum, calcium and other elements in the surrounding soil, and is beneficial to root absorption.
Mixed with organic fertilizer: Phosphate fertilizer, especially calcium magnesium phosphate fertilizer mixed with organic fertilizer, can convert the poorly soluble phosphorus in phosphate fertilizer into effective phosphorus that is easily absorbed by crops.
Layered application: Phosphate fertilizer has little mobility in the soil, and it is basically where it is not moved. Therefore, phosphate fertilizer should be applied in both the deep and shallow layers. Applying the phosphate fertilizer to the shallow layer is conducive to the absorption of the seedlings, so that the crops are returned to the forest early and the tillers are fast. Generally, 20-40 kg of phosphate fertilizer per hectare, 1/3 of shallow layer and 2/3 of deep layer.
Mixed with nitrogen fertilizer: crops absorb a certain proportion of nutrients, if the proportion is out of balance, it will not grow well. Single application of nitrogen fertilizer, root system is not well developed, easy to fall, and susceptible to pests and diseases, and accelerate the excessive decomposition of nitrogen in the soil, causing the imbalance of nitrogen and phosphorus. The combined application of nitrogen and phosphorus not only balances nutrients, but also promotes root growth and lays a foundation for high yield.
Spraying outside the roots: When the crops are in the late growth stage, the roots are gradually aging, and the ability to absorb nutrients is weakened, often resulting in phosphorus deficiency. At this time, the water-soluble calcium superphosphate can be sprayed onto the crop leaves to allow the phosphorus to enter the plant through the pores or stratum corneum of the foliage. Spray on a sunny morning or evening.
Early application: Crops absorb phosphorus at the seedling stage, accounting for half of total phosphorus in the growing season. If the phosphorus deficiency in the seedling stage will affect the later growth, it is difficult to recover the loss of early phosphorus deficiency even if it is replenished later, so the phosphorus can not be lost in the seedling stage.
Fine application: Superphosphate is easy to absorb moisture and agglomerate during storage. When applied, it should be broken and sieved to facilitate root absorption.
Concentrated application: Phosphorus is easily fixed by the fixation of iron, aluminum, calcium and other elements in the soil. Therefore, the application should be carried out at a point and the application of phosphorus should be carried out around the seeds and roots. This can avoid the fixation of iron, aluminum, calcium and other elements in the surrounding soil, and is beneficial to root absorption.
Mixed with organic fertilizer: Phosphate fertilizer, especially calcium magnesium phosphate fertilizer mixed with organic fertilizer, can convert the poorly soluble phosphorus in phosphate fertilizer into effective phosphorus that is easily absorbed by crops.
Layered application: Phosphate fertilizer has little mobility in the soil, and it is basically where it is not moved. Therefore, phosphate fertilizer should be applied in both the deep and shallow layers. Applying the phosphate fertilizer to the shallow layer is conducive to the absorption of the seedlings, so that the crops are returned to the forest early and the tillers are fast. Generally, 20-40 kg of phosphate fertilizer per hectare, 1/3 of shallow layer and 2/3 of deep layer.
Mixed with nitrogen fertilizer: crops absorb a certain proportion of nutrients, if the proportion is out of balance, it will not grow well. Single application of nitrogen fertilizer, root system is not well developed, easy to fall, and susceptible to pests and diseases, and accelerate the excessive decomposition of nitrogen in the soil, causing the imbalance of nitrogen and phosphorus. The combined application of nitrogen and phosphorus not only balances nutrients, but also promotes root growth and lays a foundation for high yield.
Spraying outside the roots: When the crops are in the late growth stage, the roots are gradually aging, and the ability to absorb nutrients is weakened, often resulting in phosphorus deficiency. At this time, the water-soluble calcium superphosphate can be sprayed onto the crop leaves to allow the phosphorus to enter the plant through the pores or stratum corneum of the foliage. Spray on a sunny morning or evening.
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