How to manage strawberries in greenhouse in wind, snow and fog

Strawberry cultivation in protected areas often encounters bad weather such as strong wind, blizzard and fog in winter and spring. Although the frequency of these weather is very low, if measures are not taken in time, strawberry production will suffer serious losses. I would like to introduce to you the management experience in production:

Management of strawberries in a windy day if strawberries in the greenhouse encounter strong winds, the greenhouse film will bulge with the wind and beat up and down. If it is not managed in time, the greenhouse film will be blown out, causing the strawberries in the greenhouse to suffer frost damage. Management measures: close all the vents to prevent strong winds from blowing into the greenhouse to harm strawberry plants and damage the greenhouse film. Tighten the film thread and, if necessary, put down part of the straw to press the greenhouse film firmly. If there is a strong wind at night, to press the grass grass firmly, it is best to put half a bag of soil on part of the grass grass in a woven bag to prevent the wind from blowing off the grass grass.

The management of snowfall days early winter and early spring snow, the external temperature is not very low, may melt while snowfall, wet grass, this not only affects the heat preservation, grass roll is also difficult, but also easy to crush the scaffolding. Therefore, measures should be taken to uncover the grass before the snow, clear the snow and then put it down after the snow has stopped. There is a snowstorm in the depths of winter, and the outside temperature is too low to uncover the grass, otherwise it will freeze the strawberries in the shed. Management measures: heavy snow on the grass, it is easy to crush the scaffolding, we must remove the snow on the grass, but also remove the snow next to the shed wall, in order to prevent snow melting through the soil into the shed, not only take away the heat, but also damage the shed wall. Clean the snow on the greenhouse film during the day to enhance the light transmittance of the shed. Raise the temperature of the greenhouse, take temporary measures to control the temperature of the greenhouse reasonably, and pay attention to prevent the occurrence of gas damage. In order to increase the temperature and prevent freezing, you can also buckle the small arch shed in the shed. In order to improve the lighting, we should pay attention to uncover the grass early during the day, but not all at once, in case the light is too strong after the snow, resulting in serious water loss of strawberries and permanent wilting.

The management of cloudy and foggy days often appears cloudy and foggy weather in winter, in which the light of the greenhouse is not as good as that of the sunny day, the relative humidity of the air is above 95%, and the indoor temperature is below 15 ℃. Such bad weather not only limits the photosynthesis of strawberry leaves, reduces photosynthetic products, and delays the ripening period of strawberries, such as overcast and foggy weather for several consecutive days during strawberry flowering, but also greatly reduces the fruit setting rate of strawberries and produces abnormal fruits, resulting in a decline in yield and deterioration of quality. Management measures: first, to increase artificial auxiliary lighting. Incandescent lamps can be used as light sources for heating treatment. Each 100W lamp shines about 7.5m2 and is heated for 5 hours from 5pm to 10:00 every day. When strawberries are heated for 5 hours every day, the yield of strawberries can be increased by 30% and 50%, and the abnormal fruit can be reduced by 50%. The second is reasonable temperature control. Temporary heating equipment is installed, heating is usually carried out at night, and ventilation is carried out for a short time around noon to control the temperature in the shed at about 20 ℃ in the daytime and above 10 ℃ at night. The third is auxiliary pollination. During the flowering period of strawberries, feeding bees to assist pollination can increase the fruit setting rate by 50% to 70%, significantly improve the yield and quality of strawberries, and improve economic benefits.