After corn emerges, watering should not be done too hastily, to avoid damaging the seedlings.

Corn has just emerged - can it be watered? Science Xingnong believes that if it is dry, water it; if it is not dry, there is no need to rush to water.

Corn's demand for water is far higher than its demand for soil. The root system of corn seedlings is poorly developed, so it needs sufficient water supply to ensure growth and development during the seedling stage. The quality of the soil directly affects the soil's ability to store water and retain fertilizer. For example, sandy soil is very prone to drought, and for corn in this kind of field, once there is a water shortage at the seedling stage, it is also most vulnerable to damage. Therefore, when watering at the seedling stage, it is still necessary to comprehensively consider the soil and the soil moisture conditions at the seedling stage.

Generally speaking, after corn is sown, the field should not be watered, but this should also be comprehensively considered according to the field's soil moisture. Good soil moisture is the prerequisite for achieving full emergence, uniform emergence, and strong seedlings. These are issues that should be considered before sowing, but if the soil moisture is poor, it will inevitably lead to missing seedlings in the field or failure to achieve uniform emergence.

In relatively arid areas like northern China, where there has long been a lack of corn, taking this year as an example, the drought in Northeast China led to the above situation. For this reason, many netizens have also asked whether it can be watered just after emergence. If it has just been sown, applying one round of "mengtou water" is very helpful for achieving full and uniform emergence. But many farmers have also missed this opportunity, resulting in uneven seedlings at the seedling stage. At this point, should water be supplemented?

Here, Science Xingnong suggests that the field soil water-holding capacity can be measured. If the water content is around 60-65%, then there is no need to rush to water, because corn plants at the seedling stage are small and weak, tolerant of drought and afraid of waterlogging. If watering is forced, seedling damage may occur. However, if the water content is too low, then watering is absolutely necessary!

But watering also has its techniques. As said above, the plants at the seedling stage are small and weak, so if watering at this time, the amount of water supplied needs to be reduced. Small-flow flood irrigation or sprinkler irrigation is sufficient. Watering 40 cubic meters per mu is enough; there is no need to pursue a large water volume.

The above is Science Xingnong's view on whether to water corn just after emergence. I hope it is helpful to you.