Lightly applied fertilizer. When corn grows to 5-7 leaves, it is the jointing stage, which is the peak period of fertilizer demand. The topdressing should be carried out according to the specific increase and situation of corn seedlings.
Heavy application of panicle fertilizer. The time for applying corn ear fertilizer is the first 10 days of corn heading. During this time, the growth and reproduction rate of corn is the fastest, and the young panicle rapidly differentiates and enters the stage of florescence differentiation of the ear. This period can be decided. The size of the ear and the critical period of how many grains are also the period of the most fertilizer requirement in the growth of corn. The fertilization amount at this stage accounts for 50% to 60% of the total fertilization amount. In areas with low middle and lower yields and areas where fertilization is not applied in the later stage, it is necessary to increase the amount of topdressing of panicle fertilizer. At the same time, according to the growth of the appropriate amount of micro-fertilizer.
Heavy application of panicle fertilizer. The time for applying corn ear fertilizer is the first 10 days of corn heading. During this time, the growth and reproduction rate of corn is the fastest, and the young panicle rapidly differentiates and enters the stage of florescence differentiation of the ear. This period can be decided. The size of the ear and the critical period of how many grains are also the period of the most fertilizer requirement in the growth of corn. The fertilization amount at this stage accounts for 50% to 60% of the total fertilization amount. In areas with low middle and lower yields and areas where fertilization is not applied in the later stage, it is necessary to increase the amount of topdressing of panicle fertilizer. At the same time, according to the growth of the appropriate amount of micro-fertilizer.
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