For basal fertilization of corn, high-quality organic fertilizers are preferred, with chemical fertilizers as supplements. The main purpose is to improve soil fertility, loosen the soil, and slowly release nutrients to meet the needs of corn seedling and later growth. Basal fertilization plan: Generally, apply 2000-3000 kilograms of well-rotted farmyard manure, 20-30 kilograms of ammonium phosphate, and 10 kilograms of potassium chloride for basal fertilization.
When it comes to fertilizing corn, what fertilizers should be used? How should corn be fertilized? In addition to applying basal fertilizer, top dressing, and foliar spraying are also crucial.
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Seed Fertilization: Seed fertilization provides the nutrients necessary for seed germination and seedling growth, mainly using quick-acting chemical fertilizers. When applying seed fertilizer, keep the fertilizer 5-10 centimeters away from the seeds to avoid direct contact, which may cause root or shoot burning.
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Top Dressing: Top dressing is done in two stages. The first application is during the 3-5 leaf stage of corn, applying 20-25 kilograms per mu of high-nitrogen compound fertilizer to promote root, stem, and ear differentiation and growth. The second application is 3-5 days before corn silk emergence and pollination, applying 15-20 kilograms per mu of urea to promote ear development, improve pollination quality, reduce tip burn, increase thousand-grain weight, and increase yield.
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Foliar Fertilization:
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Macroelement Foliar Fertilizer: Mainly includes urea and potassium dihydrogen phosphate. In the late stage of corn growth, foliar spray 2% urea solution + 0.2-0.3% potassium dihydrogen phosphate can significantly increase yield.
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Microelement Foliar Fertilizer: Such as zinc, boron, etc. Zinc fertilizer can be sprayed from seedling to jointing stage for good yield increase, using 0.2% zinc sulfate solution for spraying. Boron can promote the growth and development of reproductive organs and improve fruit setting. Generally, 0.01% boric acid solution is sprayed during the mid to late growth stage.
In conclusion, basal fertilizer accounts for about 65%-70% of the total fertilizer application during the entire growth period of corn. Therefore, a well-applied basal fertilizer is half the success of corn planting. Followed by supplementary techniques such as seed fertilization, top dressing, and foliar spraying, corn can grow well, with full grains and high yield.
