Disaster Relief Crop Remediation - Corn

Maize is a crop that requires a large amount of water but is not tolerant. When the soil moisture exceeds 80% of the maximum water holding capacity, the corn is stunted, especially in the corn seedling stage. After the corn seeds germinate, the earlier the damage occurs, the heavier the damage will be, the longer the flooding time will be, the heavier the damage will be, and the deeper the flooding will be, the heavier the damage will be. In general, flooding reduced production by more than 20% in 4 days, flooded for 3 days, and plants died. After the emergence of waterlogging, corn should take remedial measures as soon as possible to minimize the loss.

Drainage and drainage shall be conducted to clear the Tiantougou, Weigou and Wajigou, remove the water in the field in time, reduce the soil moisture, and achieve the purpose of energy discharge and energy reduction.

When cultivating loose soil after rainfall, the ground must be ploughed in time to loosen soil, remove soil compaction, promote soil ventilation, improve the rhizosphere environment, and promote root growth. Lodging corn seedlings should be righted and rooted.

Early Miao Miao fertilizer should be timely to raise seedlings, big bell mouth period of 20 kg of urea per acre. For fields with long flooding time and severe waterlogging, spray high-efficiency foliar fertilizers and root-stimulating agents at the same time as fertilization to promote the restoration of growth.

After pest control is strengthened, a variety of pests and diseases such as plague and corn borer are prone to occur. When spraying foliar fertilizer, pest and disease control can be carried out at the same time. Rhizoma blight can be controlled by Jinggangmycin or carbendazim spray. Spraying should focus on spraying stems and leaves below the ear; Chlorothalonil or thiophanate-methyl can be used to prevent or treat size spots. Once in 7 to 10 days, 2 to 3 consecutive times. Times. Prevention of corn borer should be mixed with poisonous soil or phoxim in the jointing stage to the trumpet period.

The replanting of corn should be replanted or changed to other crops after the disaster.

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