#$%^&*AU2020102008A420201008.pdf#####ABSTRACT The invention relates to a simplified fertilization method for summer corn under a wheatcorn rotation mode, which comprises the following steps: After the wheat harvest, the straw is crushed and returned to the field in its entirety. Then sowing the corn with straight fertilizers of nitrogen, phosphorus and potassium, which are applied at one time while sowing, and it is not necessary to top-dressing during the whole growth period. Here, the nitrogen fertilizer is a mixture of coated urea with 60-80% of the mass ratio, and regular urea with 20-40% of the mass ratio. The fertilizer applied in this paper is straight fertilizer, which can meet the nutrient demand of corn during the whole growth period, without the need to top-dressing during growth. Therefore, it saves labor costs, greatly improves the utilization rate of nitrogen fertilizer, and reduces the loss of nutrients with rainwater. So the supply of nutrients to fast growing period(the jointing and booting period) is ensured. Thus, it can greatly increase the yield of corn, which is conducive to stable and increased production with much lower input costs.
