Analysis on the abnormal situation of raising seedlings in winter and spring

Raising seedlings

When raising seedlings in winter and spring, abnormal conditions often occur due to weather changes or improper management, mainly as follows:

1. Retting roots and seedlings. It is mainly caused by high humidity and low temperature.

2. grow seedlings in vain. It is mainly caused by high temperature and humidity.

3. Aging seedlings. The seedlings are too old or squatted for too long.

4. Freeze-injured seedlings. Caused by too low temperature.

5. Drug damage to seedlings. Caused by excessive dosage and high concentration.

6. Wilting seedlings. It was caused by the sudden opening of the curtain on a continuous rainy and snowy day.

7. Wearing a hat and seedling. The nursery bed is too dry and the soil cover is thin.

In view of these abnormal conditions, the temperature and humidity should be controlled when raising seedlings, and when the temperature is too low, measures such as ground hot line should be used to improve the ground temperature to avoid too much humidity in the seedling bed, and the seedling age should be strictly controlled at the same time. If the disease occurs when spraying, it is necessary to grasp the concentration to avoid excessive dosage.