At present, the spring maize has gradually entered the big bell-mouth period, this period is the progress of corn vegetative and reproductive growth. The large bell-mouth period of corn is to promote stalk prosperous growth, and it is necessary to ensure that the roots, stems, and leaves of corn plants thrive, and that the ear development is well managed.
1. Top dressing. During the big bell season of corn, in the case of rain or surface plutonium, 5 to 10 cm away from the roots of the corn, the depth of 10 cm shall be applied by means of trenching or digging, and the soil shall be covered after fertilization to increase the utilization of fertilizer.
2. Pedestal Peders. The cultivator can loosen the soil, improve ventilation and water and fertilizer supply, thicken the base soil layer of the plant, promote root growth, and prevent plant lodging. At the same time, weeds can be removed to ensure water retention.
3. Watering. Ensure that the soil is not dry during the period from the big bell mouth to the 25th day after grouting, and if it is drought, water it in time.
4. Take care to prevent corn borer. In spring corn, the leaf mosaic rate at the end of the leaf stage reached 10%, and corn bran should be controlled by drugs. The appropriate control period is the trumpet period before corn heading, and 3% phoxim granules can be applied to the inner leaves, with 800-1000 grams of mu. Can also be used 10% chlormethanyl benzamide suspension agent 10 ml per mu, the water on the corn heart leaf spray, so that the syrup soaked in the middle of the heart of corn leaves, killing larvae to ensure the normal growth of corn seedlings. Medication should be taken care of before the tasselling at the end of corn leaves.
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