Answer: The corn base fertilizer should be based on organic fertilizer. The amount of base fertilizer generally accounts for 60%-70% of the total fertilization amount . When the base fertilizer is sufficient, it can be ploughed and turned into soil. If the fertilizer is insufficient, it can be applied in all ditch or hole. Set in fertilizer absorbed by the plants to reduce losses and high fertilizer use efficiency. Phosphorus and potassium fertilizers have good effect as base fertilizer. Superphosphate is used as base fertilizer, and the dosage per acre is 15-25 kg. It should be mixed with organic fertilizer or applied after heap rot. As basal application of potassium, 7.5-10 kg per acre, administration can be mixed with organic fertilizer. Because the early sowing of summer crops is the key to increasing production, summer corn is often too late to apply fertilizer. Generally, when the former crops (such as wheat) are planted, the base fertilizer is applied, and the nutrients required for the summer corn are used for the post-effect. Under the premise of not affecting the early sowing, using the decomposed and high-quality farmyard manure to apply the base fertilizer to the summer corn by means of ditch application and acupoint application is beneficial to increase production.