Fermentation after mixed fermentation with organic fertilizer
Organic fertilizers are rich in organic matter, phosphoric acid, and a variety of organic weak acids that make insoluble phosphates soluble phosphates. Not only can make the utilization of phosphate fertilizer greatly improved, but also can effectively overcome the problem of phosphorus fertilizer seedlings.
In combination with nitrogen fertilizer, potash fertilizer and zinc fertilizer
According to the demand of wheat for nitrogen, phosphorus, potassium, zinc and other elements, applying nitrogen, potassium, and zinc fertilizers scientifically when applying phosphate fertilizer can effectively supplement the deficiency of soil nutrients, and increase the utilization rate of phosphate fertilizer by 20%- 30%. The proportion of application: general high-yield wheat fields, 4,000 kg of high-quality organic fertilizer per acre, 50 kg of standard phosphate fertilizer, 30 kg of standard nitrogen fertilizer, 12 kg of standard potash, 1.5 kg of zinc sulfate in Mg-deficient land; High quality organic fertilizer 3000 kg, standard phosphate fertilizer 50 kg, standard nitrogen fertilizer 35 kg, standard potassium fertilizer 8 kg, zinc sulfate 1 kg is appropriate.
Centralized application method
The concentrated application of P fertilizer is to reduce the contact surface with soil, which is an effective method to reduce the effective phosphorous in the phosphate fertilizer fixed by calcium, magnesium, aluminum and other elements in the soil, especially in yellow-red soil, calcareous soil, Huangdi soil, shajiang black soil, etc. The application of phosphate fertilizer on clay-like soil is more easily fixed by soil. Studies have shown that application of phosphate fertilizer concentration bar can increase utilization by 28%, and increase wheat output by 11.8%.
Method of application: Before the wheat is sown, use a seed sowing machine to apply the phosphorus fertilizer 8-10 cm deep and plant it with a second seed sowing machine so that the wheat seed and phosphorus fertilizer are staggered by 1-2 cm.
Phosphate fertilizer for local conditions
In order to increase the utilization rate of phosphate fertilizer, phosphate fertilizer should be used for soil. In neutral and calcareous alkaline soils, water-deep superphosphate should be used. Superphosphate is a weak acid that can neutralize the alkali in the soil. In acidic soils, weakly basic calcium magnesium phosphate is used. Acidic soil is used. Alkaline fertilizer can not only enhance its fertilizer efficiency, but also neutralize the acid in the soil to avoid the acid damage to the wheat root system.
The amount should be appropriate
The kilograms of wheat yield per kilogram of phosphate fertilizer decreased with the increase of the amount of phosphate fertilizer, but when the amount was too small, the yield per unit area was not significant, and the general mu application amount was 50-60 kilograms.
External leaf spraying
In the jointing of wheat to the booting and filling stage, the superphosphate 2-3 kg plus clear water, filter residue, mixed into the fresh water 50-60 kilograms, in the jointing of wheat, booting and filling each time, can increase production 4%-6%. Or spray 0.2% potassium dihydrogen phosphate solution outside the root, spray 60-80 kg per acre, spraying three times, there is a clear strong stalks down, can increase production 4.6% -8.1%. The extra-root spray should be selected after 3 pm on a sunny day without sunshine or on a cloudy day. Spray the wheat plants with a sprayer to spray them one at a time and one at a time, so that all the leaves of the plants are evenly coated with fertilizer solution. The foliar spray has less fertilizer, has a quick effect, and has a high fertilizer utilization rate. Constrained by soil moisture and other advantages.
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