How to fertilize summer corn

How to fertilize summer corn? Please instruct farmers in some areas to finish harvesting winter wheat and immediately order summer corn. Farmers call this time the rush to harvest seeds in the three summer periods. Since it is a double grab, there is no time to turn over and prepare the land, and summer corn will not be fertilized. In other areas, corn is interplanted before wheat is harvested. The common feature of the above two types of areas is that the base fertilizer can not be applied before sowing summer corn. Therefore, the fertilization of summer corn can only rely on planting fertilizer and topdressing. How to grasp the planting and topdressing of summer corn? This paper introduces the fertilization experience of Chen Aiguo, a professional grower in Wangdu County, Hebei Province. The specific method is that when sowing summer corn, combined with sowing and applying seed fertilizer, the amount of seed fertilizer is about 10 kg / mu, and the fertilizer is a compound fertilizer with a nitrogen, phosphorus and potassium ratio of 15%, 10%, 15%. The method of fertilization is to open ditches and fertilize and then cover the soil. When the corn seedlings grew to the trumpet mouth, he applied fertilizer for the second time in time, applying 20 kilograms of urea per mu, burying the soil and then irrigating. In the past two years, the average yield of summer corn he planted was more than 450 kilograms at harvest, some of which reached 1000 jin. The fertilization method has the following points for reference: 1. The timing of seedling fertilizer is accurate, which reflects the principle that summer maize seedling fertilizer should be applied early and topdressing fertilizer should be applied in time. 2. In terms of fertilization types, it not only reflects the characteristics of balanced application of N, P and K nutrients of seedling fertilizer, but also highlights the characteristics of topdressing nitrogen fertilizer in the peak growth period. Nitrogen, phosphorus and potassium fertilizer was applied in the first seedling fertilizer, and nitrogen fertilizer was applied again in the second topdressing. 3. In terms of the amount of fertilizer applied, compound fertilizer and urea were applied in both times. The yield of summer corn obtained in that year is at the level of 450-500 kg per mu. This amount of fertilizer application is economical and optimized. Click to get more corn planting techniques. Click to get more food crop planting techniques.