According to the cultivation characteristics of winter wheat, fertilizer characteristics and agricultural production, we must do three things in scientific fertilization:
The first is to apply a good base fertilizer. The farmer said that “the wheat is rich in the fetusâ€, and there is a proper amount of nitrogen nutrition and phosphorus and potassium fertilizer in the seedling stage, so that the wheat seedlings are born early and have a certain amount of healthy tillers before winter, and they grow into ears, increase grain and gain weight after spring. basis. Generally, the yield index of wheat is set to 500 kg/mu, 10 kg of urea per mu, 20 kg of diammonium phosphate and 20 kg of potassium chloride, and the total effective nutrient content is about 30 kg. If compound fertilizer is applied, it is calculated according to the amount of nitrogen, phosphorus and potassium contained in the fertilizer.
Followed by skillful topdressing. Topdressing is beneficial to increase and increase the ear. After the spring wheat seedlings in the northern winter wheat area are green, 10 kg of urea per acre can be used for the wheat fields with weak growth, ditch application or acupoint application, and watering can be done when conditions are met. For strong wheat fields, fertilizer management should be controlled during jointing. Lodging.
Finally, foliar fertilization is carried out in the late stage of wheat growth. At this time, the northern wheat area is often exposed to dry heat and wind damage. If 0.2% concentration of potassium dihydrogen phosphate (50 kg of fertilizer solution per mu, use about 100 g of potassium dihydrogen phosphate), spray 1 or 2 times during the flowering period, the interval between 10 and 15 days It can promote wheat grain filling and reduce the damage of dry hot air.
The first is to apply a good base fertilizer. The farmer said that “the wheat is rich in the fetusâ€, and there is a proper amount of nitrogen nutrition and phosphorus and potassium fertilizer in the seedling stage, so that the wheat seedlings are born early and have a certain amount of healthy tillers before winter, and they grow into ears, increase grain and gain weight after spring. basis. Generally, the yield index of wheat is set to 500 kg/mu, 10 kg of urea per mu, 20 kg of diammonium phosphate and 20 kg of potassium chloride, and the total effective nutrient content is about 30 kg. If compound fertilizer is applied, it is calculated according to the amount of nitrogen, phosphorus and potassium contained in the fertilizer.
Followed by skillful topdressing. Topdressing is beneficial to increase and increase the ear. After the spring wheat seedlings in the northern winter wheat area are green, 10 kg of urea per acre can be used for the wheat fields with weak growth, ditch application or acupoint application, and watering can be done when conditions are met. For strong wheat fields, fertilizer management should be controlled during jointing. Lodging.
Finally, foliar fertilization is carried out in the late stage of wheat growth. At this time, the northern wheat area is often exposed to dry heat and wind damage. If 0.2% concentration of potassium dihydrogen phosphate (50 kg of fertilizer solution per mu, use about 100 g of potassium dihydrogen phosphate), spray 1 or 2 times during the flowering period, the interval between 10 and 15 days It can promote wheat grain filling and reduce the damage of dry hot air.
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