When planting corn, will it decrease if we encounter continuous heavy rain?

The middle and late stages of corn are the periods with strong waterlogging tolerance. If the ground is flooded to a depth of 10 centimeters and lasts for 3 days, as long as the leaves are exposed to the water, they will not die, but the yield will be greatly affected. Because the growing point of the heel system has not yet exposed the ground, waterlogging and yield loss are most severe at this time, especially in the summer when the temperature is higher and there is more rainfall. If there is continuous rainfall and water cannot flow out, the cornfield will be soaked by the rain and the seedlings will be drowned. In fact, we need to "nip problems in the bud" by plowing the land, making borders, and setting up drainage ditches before sowing.

Waterlogging is mainly caused by excessive soil moisture, which prevents crop roots from aerobic respiration. Therefore, the first step to alleviate waterlogging is to promptly remove accumulated water from the field and cultivate it to disperse moisture to increase soil permeability. , to ensure normal respiration of plant roots. In continuous cloudy and rainy weather, good drainage should be done, and at the same time, attention should be paid to pest control. Drought or lack of fertilizer will cause the leaves to curl and turn yellow. Timely top dressing requires watering. When the weather is long and rainy, the main attention should be paid to anthracnose or corn caterpillars. Weeds are growing wildly, and corn herbicides can kill them and kill insects.

If the rainwater is not drained away in time, the corn seedlings will die quickly when the sun comes out. Therefore, during the corn seedling stage, if it rains continuously, you must find a way to drain the rainwater from the corn field. Don't let the rain soak the corn seedlings. Every time it rains, make sure that there is no obvious accumulation of water in the field within 6 hours after the rain stops. Secondly, when the continuous rainfall ends, the temperature will enter a stage of rapid rise, and the soil will It is prone to hardening, which affects the growth of the corn root system. Therefore, farmers who have the conditions.

When corn seedlings encounter continuous rainfall in the early stage, first of all, we must pay attention to the phenomenon of wind falling of corn seedlings. Long-term rain will cause the foundation of corn seedlings to be unstable and prone to being blown over by the wind. If the corn seedlings fall over, Untimely correction will lead to incorrect growth of corn seedlings. Whether there has been any adjustment, according to the original division, our Changzhi is a miscellaneous grains production area mainly composed of corn and millet. In this area, meteorology is called the "southeast monsoon climate", which means it is windy and less rainy in spring, which is suitable for the growth of corn, millet and other cereals.