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.
The organic fertilizer mixed heap is applied after fermentation. Organic fertilizer is rich in organic matter, phosphoric acid and a variety of 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.
It is applied in combination with nitrogen, potassium and zinc fertilizers. According to the requirements of nitrogen, phosphorus, potassium and zinc in wheat, the application of nitrogen fertilizer, potassium fertilizer and zinc fertilizer in scientific application can not only effectively supplement the soil nutrient deficiency, but also increase the utilization rate of phosphate fertilizer 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.
Concentrated application. The concentrated application of phosphate fertilizer can reduce the contact surface between 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%.
Phosphate fertilizer is used for soil. Water-soluble superphosphate should be used on neutral and calcareous alkaline soils.
The dosage should be appropriate. The increase in the yield of wheat per kg of phosphate fertilizer decreases with the increase of the amount of phosphate fertilizer. However, when the dosage is too small, the yield per unit area is not significant. Generally, the application rate of 50-60 kg is suitable.
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