In order to obtain high yield of corn, we conducted a test of corn fertilization method. The experiment was carried out on black sandy soil plots with uniform fertility. Three plots with an area of ​​667 square meters were taken. The maize variety, row, spacing, number of plants, seeding method and timing, and the amount and quantity of base fertilizer and mouth fat were the same. Under the conditions, different top dressing methods were tested. The specific approach is as follows. 1. The test variety Danyu 26 was sown on April 25th with a spacing of 53 cm, a plant spacing of 43 cm and 288 plants. The base fertilizers were fermented and decomposed cow manure and pig manure (50% each) 150 kilograms. The uniform strips were applied in the sowing ditch. Then 5 kilograms of long-acting ammonium hydrogen (produced by the Fengcheng Chemical Fertilizer Plant) were applied to the base fertilizer, and then Do ridges. When sowing, another 1 kg of diammonium phosphate was used as a mouth fertilizer per plot. The first plot was not top-dressing; the second plot was topped with 5 kilograms of long-acting ammonium hydroxide at the 9-leaf age of the original stage of corn spikelet differentiation. When composting, 6-8 cm away from the plant rhizosphere, plan 10 cm deep dressing pit, fertilize, and then cover the soil compaction; the third plot uses two top dressing methods, the amount of topdressing is constant, the first topdressing in corn 9 leaf age When carried out, chase 2 kg of ammonium dehydrogenase, the second time in the 12-leaf stage of young panicle differentiation, chase 3 kg, and the top dressing method is the same as the second plot. 2. Yield results After corn maturation, single yield, single release, and dry threshing were used to calculate yield. The first plot produced 41.5 kilograms; the second plot produced 44 kilograms, and the third plot produced 46 kilograms. It can be seen that the effect of applying fertilizer twice is good.