The standard ratio of wheat base fertilizer should be reasonably adjusted according to soil fertility, plant growth and the needs of wheat varieties. Generally speaking, wheat base fertilizer mainly includes nitrogen, phosphorus, potassium and other elements. The following is a reference fertilization ratio:
1.Nitrogen fertilizer: apply 12-15 kg of pure nitrogen per mu, which is equivalent to 25-30 kg of urea. For high-yield wheat fields, 50%-60% nitrogen fertilizer is used as the base fertilizer, and 40%-50% is applied in combination with watering from the rising stage to the jointing stage. 60%-70% of nitrogen fertilizer in middle-yield wheat fields should be applied at the bottom, and 30%-40% should be applied at the stage of regreening to the rising stage.
2.Phosphate fertilizer: apply 6-8 kg of phosphorus pentoxide per mu. Phosphate fertilizers can be applied entirely as a base fertilizer.
3.Potassium fertilizer: apply 5-6 kg of potassium oxide per mu. Potassium fertilizer can be applied entirely as a base fertilizer.
4.Micro-fertilizer: According to the soil nutrient status, zinc, boron, manganese and other elements are supplemented.
When applying base fertilizer, the following points should also be noted:
1.Increase the application of organic fertilizer: Organic fertilizer can improve soil fertility and improve soil structure. 3-4 cubic meters of farm manure or more than 4 cubic meters of high-quality dry chicken manure can be applied per mu.
2.Promote straw returning to the field: corn straw is crushed and finely cut and returned to the field to increase nitrogen, phosphorus, potassium and a variety of trace elements in the soil.
3.Choose a regular fertilizer brand: ensure the quality of fertilizer and improve the fertilization effect.
In summary, the reasonable ratio of wheat base fertilizer should be adjusted according to soil fertility, plant growth and the needs of wheat varieties, and attention should be paid to increasing organic fertilizer, promoting straw returning and selecting regular fertilizer brands.