Latest Technical Points for High-Yield Field Management of Corn
Corn is planted very widely in our country and is one of the most common food crops in our country. After corn enters the tasseling stage, it enters a stage of rapid growth and development. This stage is when corn leaves are at their largest and most numerous, and it is also the best time to determine the weight of the corn kernels. The growth and development during this period determine the final yield and quality. Therefore, in order to strive for high yield, field management at this stage must be strengthened.
1. Timely watering
The tasseling stage of corn is the stage with the highest water consumption during the entire growth period, accounting for 35 percent of the whole growth period. The tasseling stage is the critical period when corn changes its water demand. If the water required by corn during the tasseling stage is not met, drought and water shortage will cause a large reduction in corn yield, and in severe cases even a total loss. This has a huge impact on the final yield of corn. If the soil is too dry, water it in time to avoid yield reduction caused by water shortage.
2. Timely topdressing
The tasseling stage of corn is not only the period with the greatest water demand, but also the period with the greatest and strongest fertilizer demand during the entire growth period. However, fertilizer should also be applied appropriately according to the growth condition of the corn. For example, for corn with plump and full kernels, an appropriate amount of nitrogen fertilizer is generally applied at silking. Because the quality has already reached the target, applying nitrogen fertilizer is aimed at promoting the seed-setting rate of corn and increasing the weight of the corn kernels.
3. Intertillage and earthing up
The purpose of intertillage is to enhance the ventilation and air permeability of the soil, while also responding to the supply of fertilizer and water and removing weeds in the field, promoting the growth and development of the corn roots. Earthing up is to increase the aerial roots of corn. Intertillage and earthing up can improve the lodging resistance of corn, because in autumn, when there is more wind, lodging of corn is very common. Therefore, after topdressing corn, carry out intertillage and earthing up as soon as possible to strengthen the lodging resistance of corn.
4. Timely delayed harvest
Corn can be harvested late at the appropriate time. There is no need to harvest immediately when it matures, because delayed harvest can ensure enough time for the corn kernels to fill. Corn grain filling is a measure to increase the weight of the corn kernels, increase yield, and improve quality. Harvest during the stage when corn is fully mature around the Beginning of Autumn. When the corn husks are found to have turned white or dried up, this indicates that the corn kernels are fully mature, and this is the period when the weight of the corn kernels is the highest. Experiments have shown that for every three days the harvest is delayed, the 1000-kernel weight increases by about ten grams. And it requires no cost at all.
The tasseling stage of corn is the most important period for corn. Doing a good job of field management during the tasseling stage of corn is the prerequisite for ensuring high corn yield. It is necessary to ensure the fertilizer and water required by corn at this stage. Of course, pests and diseases must also be controlled. Common pests and diseases include stalk rot, aphids, and so on. If pests and diseases are well controlled, high corn yield will be more assured.