Phosphate fertilizers are applied to crops most sensitive to phosphorus, such as beans, rapeseeds, wheat, cotton, potatoes, and melons. Appropriate application of these phosphate fertilizers can result in higher economic benefits.
First, the economic application of phosphate fertilizers, the seasonal crops can generally only absorb a small part of them, and the latter effect can last for several years. Therefore, in the years after the application of phosphate fertilizer, there is no need to apply it annually, which can avoid waste and reduce the economic burden of purchasing fertilizer.
Second, early application of crops to absorb phosphorus at the seedling stage is the fastest, to account for half of the total phosphorus absorbed by the crop during the whole growth period, if the phosphorus deficiency at seedling stage, will affect the growth of the later period, even if the later period, it will be difficult to restore early phosphorus deficiency The loss, therefore, should pay attention to the lack of phosphorus in the seedling stage of crops.
Third, fine superphosphate is easy to absorb moisture and agglomerate during storage, so when it is applied, it must be smashed and sieved to facilitate the absorption of crop roots.
Fourth, concentrated application of phosphorus is easily fixed by soil elements such as iron, aluminum, and calcium. Therefore, when applying, holes and strips should be applied to fix the phosphorus around the seeds and roots. This can prevent phosphorus from being fixed by elements such as iron, aluminum, and calcium in the surrounding soil, and it is also beneficial to the absorption of crop roots.
Fifth, mixed application of organic fertilizer and phosphate fertilizer, especially calcium, magnesium, phosphate fertilizer and organic fertilizer, can make phosphorus in the insoluble soluble phosphorus into agricultural crops absorbable and effective phosphorus.
Sixth, the application of phosphate fertilizer layered in the soil mobility is small, where the application is basically where it does not move, so the application of phosphate fertilizer in the deep and shallow layers. The application of phosphate fertilizer to the shallow layer is beneficial to the absorption of seedlings, so that the crops will return to the early stage and the crops will be delivered quickly. The application of phosphate fertilizer is generally applied 1/3 in the shallow layer and 2/3 in the deep layer.
Seven, with the application of nitrogen fertilizer crops to absorb a variety of nutrients have a certain percentage, if the imbalance is not good long. 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 decomposition of nitrogen in the soil, causing imbalance in nitrogen and phosphorus. The combined application of nitrogen and phosphorus can not only balance nutrients, but also promote root growth, laying the foundation for high yields.
8. After spraying the crops outside the roots 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 crop, so that phosphorus enters the plant through the pores or stratum corneum of the leaves. Cereal crops can use 1%-3% phosphate fertilizer, vegetables can use 1% phosphate fertilizer. Spray on a sunny morning or evening.
In the phosphorus-deficient soil, the application of phosphate fertilizers to red soils, yellow mud fields, ducks, muddy fields, and cold-water immersed fields has significant yield increase effects, while for fertilizer fields, loam soils, and continuous application of large amounts of phosphate fertilizers in previous years, Appropriately less.
Antioxidants Vitamins,Antioxidant Vitamins Tablets,Rubber Antioxygen,Antioxidants Free Radicals
SHANDONG BAISHENG BIOTECHNOLOGY COM , https://www.baishengbioproducts.com