Topdressing of corn ear fertilizer and grain fertilizer

Panicle fertilizer is generally applied 10-15 days before tasselling, when corn has a large bell mouth. For fields with insufficient basal fertilizer and poor seedlings, panicle fertilizer should be applied early. The amount of panicle fertilizer should be based on the situation of seedlings, soil fertility and application of jointing fertilizer. Generally, 15 to 20 kg of ammonium bicarbonate or 5 to 8 kg of urea is applied per acre. Granular fertilizer is generally applied when the ear is spun, so that the effect of fertilizer can be exerted during the milk ripening period. The amount of granular fertilizer should not be too much. Apply 3-5 kg ​​of ammonium per acupoint, or use a mixture of 1%-2% urea and potassium dihydrogen phosphate for foliar spray. The amount of liquid sprayed per mu is about 50 kg.

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