How to apply phosphorus Fertilizer to Wheat

Wheat is a crop that needs more phosphorus. Scientific application of phosphate fertilizer is one of the key measures to improve the efficiency of phosphate fertilizer, reduce the cost of fertilization and promote the high quality and high yield of wheat. 1. After composting and fermentation with organic fertilizer, the application of organic fertilizer is rich in organic matter, phosphoric acid and a variety of organic weak acids, which can turn insoluble phosphorus into soluble phosphorus. At the same time, the mixture of organic fertilizer and phosphate fertilizer can greatly reduce the contact surface between phosphate fertilizer and soil, thus reducing the fixation of soil to phosphorus. Therefore, through composting and fermentation with organic fertilizer, not only the utilization rate of phosphate fertilizer can be greatly improved, but also the problem of burning seedlings can be effectively overcome. Composting method: half a month before application, mix 1 part of phosphate fertilizer with 10-20 parts of organic fertilizer and pile it up, then seal it with mud. two。 According to the requirement of nitrogen, phosphorus, potassium and zinc in wheat according to the requirement of nitrogen, phosphorus, potassium and zinc fertilizer, the scientific application of nitrogen fertilizer, potassium fertilizer and zinc fertilizer can effectively supplement the deficiency of soil nutrients and increase the utilization rate of phosphate fertilizer by 20-30%. The proportion of combined application is as follows: 4000 kg of high-quality organic fertilizer, 50 kg of standard phosphate fertilizer, 30 kg of standard nitrogen fertilizer, 12 kg of standard potassium fertilizer and 1.5 kg of zinc sulfate per mu in general high-yield wheat fields; it is appropriate to apply 3000 kg of high-quality organic fertilizer, 50 kg of standard phosphate fertilizer, 35 kg of standard nitrogen fertilizer, 8 kg of standard potassium fertilizer and 1 kg of zinc sulfate per mu in middle-yield fields. 3. Concentrated application of phosphate fertilizer can reduce the interface between phosphate fertilizer and soil, reduce the fixation of soil to phosphorus, and improve the utilization rate. Compared with scattered application, concentrated application of phosphate fertilizer can increase the utilization rate by 28% and increase the yield of wheat by about 12%. 4. Due to the selection of phosphate fertilizer in neutral and calcareous alkaline soil, it is appropriate to choose water-soluble calcium superphosphate. Calcium superphosphate is weakly acidic and can neutralize alkali in soil; in acidic soil, weak alkaline calcium magnesium phosphate fertilizer should be selected. The application of alkaline fertilizer in acidic soil can not only enhance its fertilizer efficiency, but also neutralize the acid in the soil and avoid the harm of acid to the root system of wheat. 5. The appropriate amount of phosphate fertilizer per kilogram to increase the yield of wheat decreases with the increase of the amount of phosphate fertilizer, but if the amount is too small, the yield per unit area is not significant, and the general application rate of 50-60 kg per mu is suitable. 6. Foliar spraying will clear 2-3 kg of calcium superphosphate, filter out the residue, mix 50-60 kg of water, spray once in wheat jointing, booting and filling stage, and increase yield by 4-6%. Or foliar spraying 0.2% potassium dihydrogen phosphate solution, each time spraying 60-80 kg per mu, spraying three times, has obvious anti-toppling effect of strong stalk, and can increase yield by 4.6-8.1%.