How to prevent hot and dry wind when growing vegetables (Methods to prevent and control dry and hot wind when growing vegetables in the open air)

The planting method of raising ridges and covering with film not only facilitates watering, but also improves the water retention performance of the soil. During the seedling stage of vegetables or after transplanting and planting, it is best to conduct moderate temperature and water control and low-temperature seedling hardening. At the same time, the amount of nitrogen fertilizer should be controlled. This can not only prevent the seedlings from growing vigorously and becoming less resistant, but also facilitate the development of vegetable cultivation. Strong root systems and strong plants can also reduce the damage caused by dry and hot winds in the later period.

1. Pay attention to the weather forecast every day and do watering properly

Before the dry and hot wind comes, you can water the crops enough in the morning or evening 2-3 days in advance. During the day Do not water in hot and windy weather to prevent crops from being short of water due to high temperatures.

When the weather is dry and the soil is short of water, small amounts of water should be poured frequently to moisturize, but watering should not be too large at one time, let alone flooding.

2. Strengthen sunshade protection and reduce water evaporation loss

For vegetable crops grown in the open field, the root system of the crops is not developed in the seedling stage, and the resistance to the adverse external environment is relatively weak. Care should be taken to avoid exposure to high temperature and bright light.

Attention should be paid to promptly erecting shade boron or adding sunshade nets for sun protection. At the same time, water and moisture conservation can also be achieved by spreading straw and straw at landmarks between the field rows or strengthening cultivating to loosen the soil.

This can lower the soil temperature and prevent root burns.

In addition, when planting vegetables, it is best to use the planting method of ridge mulching, which not only facilitates watering, but also improves the water retention performance of the soil.

3. Prevent sudden sunny spells and hot dry winds after rain

For vegetables grown in greenhouses, when the temperature in the greenhouse reaches above 30 degrees, attention should be paid to timely ventilation and cooling, or spraying water through the leaves way to lower the temperature.

When opening the shed for ventilation and cooling or after continuous rainy weather, the shed should not be opened too large or too violently at one time to prevent flashover. You can open the shed film on both sides or gradually expand the vents according to the instructions. method to proceed.

4. Pay attention to the supplement of foliar fertilizers to enhance the stress resistance of seedlings

Improving the strength and thickness of seedlings and cultivating strong and developed root systems can significantly enhance the resistance of vegetables to drought. Hot air capability.

For areas with severe dry and hot winds, or before the arrival of dry and hot winds, or during the vegetable growth period, you can spray potassium dihydrogen phosphate, amino acid foliar fertilizer, chitin, and brassinoids on vegetables. Foliar fertilizers such as lactones and S-induced antibiotics.

Spray once every 7-10 days, and spray 2-3 times continuously to cultivate strong and developed seedlings, thereby improving the stress resistance of the vegetables themselves.

In addition to the above methods, during the seedling stage of vegetables or after transplanting and planting, it is best to conduct moderate temperature control, water control, and low-temperature seedling hardening. At the same time, the amount of nitrogen fertilizer should be controlled.

It can not only prevent seedlings from growing vigorously and becoming less resistant, but also help vegetables cultivate developed root systems and strong plants. It can also well reduce the damage of dry and hot winds in the later period.