Technical points of field management in the period of maize trumpet mouth

The big trumpet period of maize is the key period of maize growth and development, and it is the stage of both vegetative growth and reproductive growth. in order to ensure the high and stable yield of maize, we must pay attention to the following key management techniques:

1. Scientific topdressing. The big trumpet period is the period when corn needs the most fertilizer and the greatest intensity of fertilizer in its life. at this time, farmers should be instructed to apply 20-30 kg urea per mu according to soil fertility and seedling conditions, and cover soil after fertilization.

2. Cultivate the soil by ploughing. Through mid-tillage, it can improve soil permeability, thicken the soil layer at the base of the plant, promote root growth and prevent plant lodging. By removing weeds at the same time, we can store water and preserve soil moisture.

3. Watering in time. The big trumpet stage of corn is the key period of water demand. Watering after fertilization can change the microclimate in the field, which is beneficial to maize pollination and improve the seed setting rate of ears.

4. prevention and control of diseases and insect pests. During this period, we should go to the field at any time to investigate the occurrence of diseases and insect pests. It was found that corn borer used 1.5% Xinshi granule dim sum, 0.5 kg per mu, and the control effect was better. At the same time, we should also pay attention to the screening of armyworm and aphids, corn spot, small spot, rust should also be diligent inspection, early control.