One-time deep application of yield increase of film fertilizer in dry land
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First, the reasons for increased production
1. Dryland mulch maize nitrogen fertilizer is applied once and deep, and the main fertilizer is urea (acylamine nitrogen). Urea is applied to the soil, and after hydrolysis, the ammonium nitrogen is adsorbed and preserved by the soil colloid for the growth and development of the crop.
2. Nitrogen fertilizer is deeply applied to the soil, which is beneficial to fertilizer conservation and fertilizer utilization under the action of surface agricultural film.
3. The deep application of nitrogen fertilizer is 15 cm to 20 cm. It is the concentrated area of ​​corn roots, which is beneficial to the root system to fully absorb nutrients and not to lose fertilizer during the whole growth stage.
4. Deep application technology of nitrogen fertilizer can solve the problem of artificially injured corn root system during topdressing. It can preserve the complete membrane surface, expand the lighting area, improve the utilization of light energy, and promote the yield and quality.
Second, the method of deep application of nitrogen fertilizer
1. Fertilize. In the field that has been smashed, according to the requirements of corn film mulching, determine the corn planting hoe, first ditch in the middle of the two kinds of corn mulching, the depth is about 15 cm, and then the urea is evenly placed in 30 kg per mu. Inside the trench.
2. Sowing the application of phosphate fertilizer. Open the ditch on both sides of the sowing urea stalk, point the diammonium phosphate, 10-15 kg per acre, and build an isolation layer with an iron ring after the plow, and then plant the seed, apply the farmer's fertilizer, cover the soil, and suppress. In this way, the soil that is turned up when the seeding is ditched is covered with soil, and the back is formed.
3. Cover film. After the fertilization and sowing, the herbicide is sprayed in the fertilizing sowing belt, then the soil is gently dragged with a wooden stick, the effect is improved, the weeds are prevented, and finally the film is coated.