Basal fertilizer for single-crop summer corn, in order to improve fertilizer efficiency, generally the organic fertilizer and some chemical fertilizers mixed application, which focused on furrow the best. Micro-fertilizers such as boron, molybdenum, and zinc can be used as base fertilizers. The specific amount per acre is as follows: 1 kg of borax, 1 kg of molybdenum sulfate, and 1.5-2 kg of zinc sulfate. It is more difficult to apply basal fertilizer to crops and intercropping maize, and the method of applying seed fertilizer can solve the problem of nutrient supply. A small amount of farmyard fertilizer (composed) can be used as a seed fertilizer or urea as a seed fertilizer, but it is necessary to do seed and fertilizer isolation to prevent injury. Urea 3-4 kg per acre is appropriate. The time, frequency, and quantity of top-dressing topdressing should be comprehensively considered based on factors such as the appearance of corn, fertilizer requirements, and growth period. Phosphorus and potash fertilizers have long-lasting effects, and the demand for corn in the earlier period is relatively large. It can be used as a base fertilizer or seedling fertilizer at one time, and 25-35 kg of phosphate fertilizer and 10-15 kg of potash fertilizer per mu. The topdressing of nitrogen fertilizer can be lightly followed by three-step top dressing method: Miaofei account for 30% of the total top-dressing fertilizer, reclaiming panicle fertilizer, and supplementary grain fertilizer. After the seedlings are applied at the jointing stage, there are strong seedlings and seedlings for promoting seedling growth. The role of strong stalks; panicle fertilizer accounted for about 50% of the total top-dressing amount, applied in the big bell-mouth period of corn, can make the ears spike large and numerous, lay the foundation for high yield of corn; grain fertilizer accounts for 20% of the total top-dressing amount, from tasselling to flowering The application will ensure the nutrient supply at the later stage of corn growth, prolong the functional period of green leaves, and promote grain and weight to obtain high yield.
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