Ecurity Fence,Stainless Steel Pipe Co., Ltd. , http://www.zjsteeltube.com
1. After the economic application of phosphate fertilizer, the crops in the current season can only absorb a small part of them, and the later effects can last for several years. Therefore, in the years after the application of phosphate fertilizer, it is not necessary to apply annually, which can avoid waste and reduce the economic burden of purchasing fertilizer.
Second, the early application of crops in the seedling stage to absorb phosphorus is the fastest, to account for half of the total phosphorus absorption in the whole growth period of crops, if the phosphorus deficiency in the seedling stage, will affect the later growth, even if the late re-application is difficult to recover the early phosphorus deficiency The loss, therefore, should pay attention to the lack of phosphorus in the seedling stage of crops.
Third, the fine application of superphosphate is easy to absorb moisture and agglomerate during storage, so when applying, it must be broken and sieved to facilitate the absorption of crop roots.
Fourth, concentrated phosphorus application is easily fixed by the fixation of iron, aluminum, calcium and other elements in the soil. Therefore, at the time of application, the application and application of the hole should be carried out to fix the phosphorus around the seed and the root system, so as to avoid the fixation of the iron, the aluminum, the calcium and the like in the surrounding soil, and the absorption of the root of the crop.
5. Mixed with organic fertilizers, especially calcium, magnesium and phosphate fertilizers combined with organic fertilizers, can convert the insoluble phosphorus in the phosphate fertilizer into effective phosphorus that is easily absorbed by crops.
Sixth, the stratified application of phosphate fertilizer is small in the soil, where it is basically where it is not moved, so 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 turn back early and the tillers are fast. The application of phosphate fertilizer is generally 1/3 in shallow layer and 2/3 in deep layer.
Seventh, mixed with nitrogen fertilizers to absorb a variety of nutrients, if the proportion is out of balance, it is not good. Single application of nitrogen fertilizer, root system is not well developed, easy to fall, and vulnerable to pests and diseases, and accelerate the excessive decomposition of nitrogen in the soil, causing imbalance of nitrogen to phosphorus ratio. The combination of nitrogen and phosphorus can balance nutrients and promote root growth, laying a foundation for high yield.
8. When the crops are sprayed outside the roots, 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 on the leaves of the crop to allow the phosphorus to enter the body of the plant through the pores or stratum corneum of the foliage. For cereal crops, 1%-3% of phosphate fertilizer can be used, and vegetables can use 1% phosphate fertilizer. Spray on a sunny morning or evening.
9. In the soil with phosphorus deficiency, the effect of applying phosphate fertilizer on the red soil dry field, the yellow mud field, the duck hoe field, the cold immersion field, etc. is significant, but for the fertilizer field, the fertilizer soil and the field where the phosphate fertilizer is continuously applied in large quantities in the past year, Appropriate less.
Source: Sichuan Rural Daily
How to improve the effect of phosphate fertilizer application
Applying phosphate fertilizer to crops that are most sensitive to phosphorus reaction, such as beans, rapeseed, wheat, cotton, potato, and melon, can be used to obtain high economic benefits.
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