Some growers often cannot achieve the goal of seeding whole seedlings after planting spring corn. The insufficient number of maize plants per unit area will directly affect the yield and planting efficiency of maize. After several years of investigation, the author suggested that the following points should be taken care of during the sowing process for all growers to avoid the above phenomenon. First, pay attention to the separation of species and fertilizers. Before planting, most of the growers use animal power, ridges and furrows, then fertilize and sow in furrows. Although the seeds and fertilizers are placed in a furrow, they are scattered due to artificial fertilization. Large area, under normal circumstances will not appear burning seedling phenomenon. In recent years, with the gradual increase in the degree of agricultural mechanization, growers mostly use mechanical sowing when sowing spring corn. In this way, the fertilizer applied at the time of sowing is sprinkled in a very narrow furrow. Although the fertilized material has a certain distance from the corn seed, the mechanical concentration of the fertilizer is very concentrated and the local concentration is very large. The phenomenon of burning seedlings. Moreover, as long as such a phenomenon occurs, it is not just a problem of ridges and ridges, but the whole land will be like this. Therefore, when planting spring corn, each grower should try to adjust the distance between the seed and the fertilizer to avoid fat burning. Second, pay attention to control the amount of basal fertilizer In order to save time, some growers put the amount of fertilizer used in the life of spring corn as base fertilizer. Therefore, before planting, the grower should rationally arrange the amount of base fertilizer and top dressing according to the fertilizer requirement during the whole growth period of the corn. Do not blindly increase the amount of base fertilizer. This will not only avoid burning seedlings, but also reduce the amount of fertilizer used, reduce production costs and increase planting income. Third, pay attention to control the depth of sowing The best sowing depth of corn is 3 to 5 cm. Because the spring climate is dry and the soil water content is low, growers try to increase the seeding depth as much as possible so as to absorb the water, in order to prevent the soil drought after sowing. However, if the seeding is too deep, the emergence time of corn will be increased and the post-emergence strength will be affected. . After the sowing of corn, if long-term seedlings are not able to emerge and receive sunlight for photosynthesis, only the corn seed's self-storage material cannot supply nutrients for seed unearthed for a long period of time. This can easily lead to bad seeds. Therefore, simply increasing the sowing depth not only does not increase the emergence rate, but also sometimes has the opposite effect. Therefore, when planting spring corn, it is necessary to timely irrigate according to soil moisture conditions to ensure sufficient planting, rather than blindly increase the depth of sowing. Fourth, pay attention to repression after sowing spring less precipitation, air drying, but also the windy season, soil water loss faster. After sowing of spring corn, repression is not timely, which will cause the soil to lose water and dry quickly, affecting emergence. Therefore, after sowing, we must immediately suppress, compact the soil, increase soil moisture, increase soil moisture, ensure the water supply of corn seeds, and achieve complete seedlings and seedlings.
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