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First, high-yield fertility Because of the good fertility foundation, topdressing should be postponed. The first top dressing should be applied to the corn seedling stage, and 30% of the total topdressing amount should be applied. The second top dressing should be applied to 70% of the total topdressing amount in the early stage of corn tasseling.
Second, medium fertility Topdressing is best for 3 times. The first top dressing should be applied to the seedling stage, and 20% of the total topdressing amount should be applied. For the second time, at the jointing stage, 60% of the total topdressing amount was applied. For the third time, 20% of the total amount of the total amount should be applied after the whole plant leaves are displayed and at the beginning of silking.
Third, the hills and dry land can be harvested before and after the heavy method of topdressing. In the seedling stage, 60%~70% of the total topdressing amount should be applied. After jointing, 30%~40% of the total amount is applied to meet the nutrient requirements of the ear differentiation stage.
Fourth, the wheat stubble sowing corn topdressing The topdressing method is basically consistent with the hills and dry land. At the seedling stage, 55% of the total topdressing amount should be applied. After jointing, 45% of the total topdressing amount is applied.
5, wheat ridge interplanting corn topdressing Wheat ridge interplanting corn generally does not apply base fertilizer. After the wheat is harvested, the corn seedlings grow weakly. Therefore, after the wheat harvest, 80%~90% of the total topdressing amount is applied at the corn seedling stage. After the tasseling, the granules are applied again.
Second, medium fertility Topdressing is best for 3 times. The first top dressing should be applied to the seedling stage, and 20% of the total topdressing amount should be applied. For the second time, at the jointing stage, 60% of the total topdressing amount was applied. For the third time, 20% of the total amount of the total amount should be applied after the whole plant leaves are displayed and at the beginning of silking.
Third, the hills and dry land can be harvested before and after the heavy method of topdressing. In the seedling stage, 60%~70% of the total topdressing amount should be applied. After jointing, 30%~40% of the total amount is applied to meet the nutrient requirements of the ear differentiation stage.
Fourth, the wheat stubble sowing corn topdressing The topdressing method is basically consistent with the hills and dry land. At the seedling stage, 55% of the total topdressing amount should be applied. After jointing, 45% of the total topdressing amount is applied.
5, wheat ridge interplanting corn topdressing Wheat ridge interplanting corn generally does not apply base fertilizer. After the wheat is harvested, the corn seedlings grow weakly. Therefore, after the wheat harvest, 80%~90% of the total topdressing amount is applied at the corn seedling stage. After the tasseling, the granules are applied again.
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