How should winter wheat be fertilized

According to the cultivation characteristics of winter wheat, the characteristics of required fertilizer, and the actual conditions of agricultural production, it is necessary to grasp three links in scientific fertilization:

The first is to apply base fertilizer. The farmer said that “Meat is rich in the fetus”, and there is an appropriate amount of nitrogen nutrition and phosphorus and potassium fertilizers at the seedling stage to make the wheat seedlings grow as early as possible. There is a certain number of healthy tillers before the winter, and they grow into panicles, increase grain, and gain weight after the spring. basis. The general set wheat yield index is 500 kg/mu, applying 10 kg of urea, 20 kg of diammonium phosphate and 20 kg of potassium chloride per mu, and the total effective nutrient content is about 30 kg. If compound fertilizer is applied, it is calculated according to the amount of N, P, and K contained in the fertilizer.

Followed by skillful dressing. Dressing is beneficial to increase glutinous rice and increase propagation. After the spring wheat seedlings return to green in the northern winter wheat region, 10 kg of urea can be used per acre for the wheat fields with weaker growing conditions. If the conditions are applied, they should be combined with watering. For strong seedlings and wheat fields, the fertilizer and water management must be controlled during the jointing period to prevent them. Lodging.

Finally, foliar fertilization is carried out in the later stages of wheat growth. At this time, the northern wheat area is often affected by dry hot winds, resulting in reduced production. If 0.2% concentration of potassium dihydrogen phosphate (spraying 50 kg of fertilizer per acre with about 100 g of potassium dihydrogen phosphate), spray 1 or 2 times at heading and flowering stage, and the interval between the two is 10-15 days. , It can promote the grouting of wheat and reduce the damage of dry hot wind.

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