How to raise winter vegetable seedlings? A detailed explanation of the latest precautions

For vegetables planted in early spring, in order to seize the market, strong seedlings are generally cultivated in winter, but winter temperatures are relatively low and the environment is harsh, which is not conducive to cultivating strong vegetable seedlings. Therefore, when raising seedlings in winter, several points must be noted. Follow the editor to take a look at the precautions for winter vegetable seedling raising.

1. Prevent seedling flash

When raising seedlings in winter, large sheds should be placed over small seedlings, to ensure the normal temperature for seedling growth during the seedling stage. Many vegetable growers, when it comes to ventilation, think that ventilation is safe, and often widen the vent all at once when the weather turns clear, so the seedlings suddenly suffer from cold wind invasion, and the resulting temperature will cause seedling flash. Therefore, vegetable growers need to be reminded that when raising seedlings in winter, when clear weather occurs, do not ventilate suddenly either. If long cloudy weather turns clear, pay even more attention to gradually uncovering the coverings. If the seedlings are found to be wilting, promptly add coverings again, and uncover them again after the plants recover. Hardening the seedlings this way many times can prevent the occurrence of seedling flash and cultivate strong seedlings.

2. Prevent root rot

Winter temperatures are low, and evaporation is small, so when watering, be sure to pay attention. Remember not to flood irrigate; water lightly or sprinkle water. If conditions permit, drip irrigation or sub-film watering can be used. Prevent excessive water from causing a sudden drop in ground temperature, thereby damaging the seedling root system and causing root rot. When root rot is severe, it can lead to the death of a large number of seedlings, causing relatively large losses.

3. Prevent freezing injury

Winter weather is harsh, so the seedling shed should strengthen heat preservation management to prevent sudden cold waves at night from causing freezing injury to the seedlings. In addition to adding coverings, measures such as heating wires, supplemental lighting, and heating blocks can also be used to increase temperature and ensure the temperature of the seedling shed.

4. Prevent seedling death

When raising seedlings in winter, ventilation conditions are relatively poor, and the humidity in the shed is relatively high, which can easily lead to the occurrence of various diseases such as damping-off and seedling blight, and can easily cause seedling death. Therefore, when raising seedlings, ventilate in time to remove moisture and reduce the probability of disease occurrence. At the same time, agents such as Previcur, hymexazol, and chlorothalonil can be sprayed in advance for prevention.

  The above is an introduction to the precautions for winter vegetable seedling raising. We hope it can help you. If you want to learn more related knowledge, please keep following us.