How to dress summer corn

How to top up summer corn? Please introduce the method of topdressing. Topdressing plays a very important role in the fertilization of corn. Fertilizer can be applied timely and appropriately according to the nutrient demand of corn. The function of topdressing is to achieve the goal of high yield of "attacking stalk, panicle and grain". The summer corn with a yield of 400 kg per mu only needs to apply nitrogen fertilizer once, and 25 kg urea should be applied at the 7-8 leaf stage, while for the summer corn with 500 kg to 600 kg per mu, under the premise of applying fertilizer, 35 kg urea should be applied in the trumpet stage. For summer corn with a yield of 600 kg to 700 kg per mu, topdressing was carried out twice on the premise of seed fertilizer application: 20 kg urea was applied at the 7-8 leaf stage and 25 kg urea was applied at the big trumpet stage. For summer corn with a yield of 750 kg per mu, topdressing was carried out in three times under the premise of seed fertilizer application: 20 kg urea was applied in the 7-8 leaf stage, 25 kg in the big trumpet stage, and 15 kg in the male heading stage. Click to get more corn planting techniques click to get more food crop planting techniques