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1. Mixed with organic fertilizer. Fermentation and application: Organic fertilizer is rich in organic matter, phosphoric acid and various organic weak acids, which can make insoluble phosphorus into soluble phosphorus. At the same time, the combination of organic fertilizer and phosphate fertilizer can greatly reduce the contact surface between phosphate fertilizer and soil, thus reducing the soil's fixation of phosphorus. Therefore, by fertilizing and fertilizing organic fertilizer, the utilization rate of phosphate fertilizer can be greatly improved, and the problem of phosphate fertilizer burning can be effectively overcome.
Stacking method: half a month before application, mix 1 part of phosphate fertilizer with 10-20 parts of organic fertilizer, pile up well, and seal with mud outside.
2. Combined with nitrogen, potassium and zinc fertilizers: According to the requirements of nitrogen, phosphorus, potassium and zinc in wheat, scientific application of nitrogen fertilizer, potassium fertilizer and zinc fertilizer when applying phosphate fertilizer can not only effectively supplement soil nutrient deficiency. It can increase the utilization rate of phosphate fertilizer by 20-30%. The ratio of its application: general high-yield wheat field, 4000 kg of high-quality organic fertilizer per mu, 50 kg of standard phosphate fertilizer, 30 kg of standard nitrogen fertilizer, 12 kg of standard potassium fertilizer, 1.5 kg of zinc sulfate in the zinc-deficient plot; 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 are suitable.
3. Centralized application: The concentrated application of phosphate fertilizer can reduce the contact surface of phosphate fertilizer and soil, reduce the fixation of phosphorus in soil and improve the utilization rate. Phosphate fertilizer concentrates can increase the utilization rate by 28% and increase the yield of wheat by about 12%.
4. Phosphate fertilizer is used for soil: water-soluble superphosphate should be used on neutral and calcareous alkaline soil. Calcium superphosphate is weakly acidic and can neutralize alkali in the soil; on acidic soil, weakly alkaline calcium magnesium phosphate should be used. The application of alkaline fertilizer in acid soil can not only enhance its fertilizer efficiency, but also neutralize the acid in the soil and avoid the harm of acid to wheat roots.
5. The dosage should be appropriate: the increase of the yield of wheat per kg of phosphate fertilizer decreases with the increase of the amount of phosphate fertilizer, but when the dosage is too small, the yield per unit area is not significant. Generally, the application rate of 50-60 kg is suitable.
6. Foliar spraying: 2-3 kg of superphosphate is opened with clear water, the residue is filtered off, mixed with 50-60 kg of clear water, sprayed once in wheat jointing, booting and filling, which can increase production 4- 6%. Or foliar application of 0.2% potassium dihydrogen phosphate solution, spraying 60-80 kg per acre, spraying three times, with obvious strong stalk anti-falling effect, can increase yield by 4.6-8.1%
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili
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Wheat is a crop with 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.
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