Field Management of Damaged Maize

Since July, more rainwater has spread throughout the province, which is conducive to the growth and development of autumn crops. The summer maize seedlings are full of seedlings, grow robustly, and form a high-yield posture. In August, some areas of our province were suddenly attacked by heavy rain. The great intensity of precipitation was rare in recent years, resulting in serious damage to the summer corn field. Taking Daishan County as an example, the entire county has flooded and lodging 66,000 mu of corn, which is the year in which summer corn has suffered the most severely affected areas and suffered the most severe damage. From the investigation, the severely damaged summer corn was washed away by flowing water, and the roots were exposed. The degree of lodging was below 30, and the stems were covered with silt. The water in individual fields was still 20-50 cm. The lighter field corn plants are tilted and the degree of lodging is above 30. Failure to strengthen management and protection in time will inevitably result in serious reductions in production and even in the event of no success. In response to the disaster situation, the recent field management work should highlight a “grab” word, implement a “fine” word, stick to the principle of combination of timeliness, practicality, and flexibility, divide the region, divide the disaster level, and adopt different management measures. Minimize the damage caused by disasters. The specific measures are as follows:

I. Drainage dredging

Maize is a crop that requires large amounts of water but is not tolerant to flooding. The longer the flooding time, the heavier the damage, the deeper the flood, and the heavier the reduction in production. Therefore, in the case of waterlogged flooded plots, the ground drains and gutters should be dredged in time, and the accumulated water in the fields should be drained quickly. The blocks that cannot be drained by the drains should be drained by water pumps or artificial water to reduce the soil moisture.

Second, scientific aid Miao

The severely populated plots of corn planted each other and the fields were poorly ventilated and light transmitting, affecting photosynthesis and disrupting physiological functions. It will lead to poor pollination, affect grouting, and must be artificially straightened in the short term. The specific method is to put the corn in the field below 30 in the lodging direction, gently raise the corn in the opposite direction of lodging, and use the foot to step on the soil in the root of the corn, and avoid trampling in the lodging position. Suppresses the growth of the reverse bearing roots, promotes the growth of aerial roots in the fallen bearing and lowers them, and fixes the plants on their own roots. Due to the fragile nature of the 1-2 stalks of the base of the corn stems and the partial damage to the roots, the roots should be prevented from breaking off and new wounds should be added. The plots with more than 60 degrees of lodging can naturally recover due to their ability to adjust themselves. Lodging 30-60 blocks to support soil, promote corn support root production.

Third, chase fertilizer material

Lodging corn roots is subject to certain damage, unfavorable plant absorption of nutrients and water, combined with soil compaction, poor ventilation, will delay the growth rate of corn, resulting in late maturity. Should be combined with cultivator per acre 10 kg of urea, potassium chloride 10 kg, promote its recovery as soon as possible.

Fourth, plow reseeding

For fields with serious disasters and no hope of remedy, it is necessary to re-plough the plant in time to make up for the losses caused by the disaster. You can choose to plant some fast-growing leafy vegetables, such as chicken feather dish, small green vegetables, heat-resistant cabbage and so on. The field reclaimed by plowing should be sown early in time, increased in phosphate fertilizer, and strengthened management to promote early maturity and leave a good mouthwash for the planting of the next crop of wheat.

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