Disaster weather is coming, what about the food in the field?

1. How to prevent disasters in advance?

Pay attention to the weather forecast. Do a good job in farmland infrastructure construction, including the construction of irrigation and drainage channels. Hail-resistant crops recover quickly and are not afraid of damage. Adjust sowing date, avoid hail season and sow short crops. In rainstorm areas, flood-resistant crops should be planted and sown in advance. When the rainy season comes, crops have grown up and their waterlogging resistance has increased.

2. How to improve the lodging resistance of grain crops?

Wheat in the later period and corn in summer are top-heavy crops, which are easy to fall down in strong winds. Planting dwarf plants can improve lodging resistance. Corn can be planted with varieties with good stem toughness, and the base will grow thicker by extrusion at seedling stage. In addition, by reducing irrigation, root system growth can be promoted and root system can be dug deeper.

3. Save or destroy species?

For those seriously affected, such as spring corn and sweet potato in some places this year, the ground was completely destroyed and the whole place was in a mess. Crops with short growth periods can be planted in these areas, such as summer corn, and buckwheat and wheat can be planted in mountainous areas. If the disaster is not serious and the stems and leaves are damaged, but the growing points and roots are not damaged, the recovery time can be about one week, and the yield reduction rate will not exceed 20%. In this case, nitrogen fertilizer and water can be applied to promote growth and development. Strong winds will blow down crops, and if they are damaged, they will only destroy seeds. If the rest stems are soft or short at seedling stage, strong wind will cause lodging, and the crops can adjust themselves, so they don't need to be taken care of and can be collected and sent back to the ground.

How to prevent large-scale pests and diseases after the disaster?

Summer is a season of high temperature and high humidity, and it is a season of high incidence of pests and diseases, especially after meteorological disasters, plants will be destroyed and their resistance will decrease. Therefore, the prevention and control of pests and diseases is indispensable. At this time, some fungicides, such as 77% copper hydroxide powder, should be sprayed to prevent diseases in a large area. Hail is usually accompanied by rain. After the crops are damaged, weeds grow rapidly, accompanied by pests and diseases, so weeding should be done in time.