How to manage strawberry ventilation?

ask:

How do I manage the ventilation of strawberries?

The temperature and humidity management of strawberry in facility cultivation is the focus of winter season off-season strawberry cultivation management. Many people think that strawberry temperature and humidity management is simply based on strawberry temperature and humidity requirements, and can be controlled by opening and closing air vents in time. In actual production, many air release management operations are not scientific and reasonable. Based on my more than ten years of experience in facility cultivation, I will talk about some small tips and details in air release management. I hope it can be helpful to the majority of farmers.

1. Correct air release operation:

Many people may disagree when it comes to air release operation, think it is not as simple as opening the air vent. In fact, it is also very skillful to release air. If the air outlet is operated by a film rolling machine, the problem is relatively small, but many greenhouse greenhouses release air manually. Here I mainly talk about the correct ventilation operation by manual operation:

1. The opening and closing width should be consistent. Do not open the air vents, and the width of the closure is not the same, it is easy to cause uneven temperature in the facility, especially to avoid the pit-type ventilation.

2. To open the air vents when the greenhouse is cooled, the air vents should be lowered first, and then the top air vents should be closed; after the temperature is lowered, the air vents should be closed, and the air vents should be topped first, and then the rear air vents. To open the air outlet for the purpose of dehumidification, the top air outlet should be opened first, and then the back air outlet; after the dehumidification, the air outlet is closed, and the first air outlet should be opened first and then the top air outlet.

The greenhouse is cooled and dehumidified, and the air vents are opened and closed at the same time.

Second, precautions for sunny air release operation:

On sunny days, due to the good light and the greenhouse effect of the facility, the temperature difference between indoor and outdoor is large, especially in winter and winter. The temperature difference between internal and external can reach more than 20 ° C. At this time, the air release is mainly based on cooling and dehumidification. Please pay attention to adjusting the size of the air vent according to the temperature in the facility at any time. Do not open the air vent once in accordance with experience in order to do other management operations indoors. This way the temperature in the facility drops sharply, which is not conducive to the growth of seedlings, flowers and fruits. . It is necessary to open and close the air vents little by little at a time, and it is advisable to keep the temperature in the facility relatively stable.

Three, precautions for continuous windy rainy days:

Most people think that it is not advisable to operate on a rainy day. It is okay not to let off wind for 1-2 days. However, if there is a continuous rain for many days and the operation is not performed for a long time, various problems are prone to occur. It is advisable to perform appropriate air release operations in a timely manner according to the weather conditions.

After 2-3 days of continuous rainy days, you should choose the noon time without rain for a short period of time (15-30 minutes is appropriate). Open the air vents appropriately to perform dehumidification (mainly to open the top air vent) and air exchange (open the top air vent and waist vent ). Continuous rain, the air in the closed facility for 2-3 days is completely supersaturated, and once the outside world stops raining, the humidity of the air flowing outside is smaller than the air humidity in the facility, so the ventilation management is helpful to reduce the humidity and air exchange in the facility. Conducive to the growth of seedlings.

Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone