Natural disasters are difficult to resist the lodging reduction measures of corn affected by natural disasters

Maize lodging

After the storm led to the lodging of corn and other crops, the leaves squeezed each other, changed the original reasonable spatial distribution, limited its photosynthesis, affected the accumulation of dry matter, interfered with the normal growth and development of corn, and aggravated the harm of diseases and insect pests. In order to reduce disasters to a minimum, the following technical measures for disaster reduction can be taken.

First, remove the stagnant water in the field as soon as possible. For the land where there is still stagnant water in the field, it is necessary to dredge the drainage ditch and waist ditch as soon as possible, to eliminate the stagnant water in the field, and to use mechanical drainage such as pumping pumps to drain the land that cannot be drained by drainage ditch and waist ditch.

Second, support the plant by hand. When people can enter the ground after the rain, artificial methods are used to pick up the plants. If the lodging degree is more than 60 °(the angle with the ground is less than 30 °), it needs to be supported manually. When supporting, it is necessary to cultivate soil at the root, not too straight, so that the stem and the ground form a proper angle (the angle between the stem and the ground is about 60 °), avoid breaking more roots, not too hard, and avoid breaking the stem.

Third, timely prevention and control of diseases. Spraying 800-fold solution of 70% methyl topiramate or 500-fold solution of 50% carbendazim or 300-fold solution of 75% chlorothalonil to control leaf diseases, once every 7-10 days, 2 times in succession.

Fourth, foliar spraying fertilizer. Combined with disease control foliar spraying 2% urea and 0.25% potassium dihydrogen phosphate mixture to improve leaf photosynthetic intensity and increase dry matter accumulation.