Basal fertilizer: Summer corn made from basal fertilizer is generally mixed with organic fertilizer and some chemical fertilizers.
Fertilizer: It is more difficult to apply basal fertilizers to intercropping maize fields. It is possible to adopt the method of applying seed fertilizers to solve the nutrient supply problem. 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 with 3 ~ 4 kg per acre is appropriate.
Top dressing: The time, frequency, and quantity of topdressing should be comprehensively considered based on factors such as the growth of corn, the period of fertilization, and the 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 potassium fertilizer are used per mu.
Nitrogen Fertilizer: Nitrogen fertilizer can be topped off in three steps: light harvesting Miaofei, heavy panicle-fertilizer, and supplementary grain fertilizer: Miaofei account for 30% of the total top-dressing fertilizer. After the seedlings are applied to the jointing stage, there are strong seedlings and stimuli. The role of seedlings and strong stalks; panicles account for about 50% of the total top-dressing amount. Applying at the big bell-mouth stage of corn can make the panicles of panicles bigger and larger; grain fertilizer accounts for 20% of the total top-dressing amount and is applied from tasselling to flowering. The supply of nutrients in the late growth period of corn extends the functional period of the green leaves.
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