Strawberry how to deal with disaster Day Strawberry safe overwintering grasp three points

Greenhouse strawberries in winter and spring often encounter strong wind, blizzard, fog and other disaster days, although the frequency of disaster days is low, but once encountered, if there are no corresponding measures, the loss is serious, now we will introduce the management experience of how to deal with disaster days.

Clear the snow from the strawberry shed

1. Windy day management: in case of strong wind, 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 and the strawberries in the shed will be frozen.

Management measures: close all vents to prevent the strong wind from blowing into the greenhouse to harm strawberries and destroy the greenhouse film. Tighten the film line and, if necessary, put down part of the grass to press the greenhouse film firmly. If there is a strong wind at night, it is best to press the grass grass firmly with a woven bag filled with half a bag of soil on part of the grass grass to prevent the strong wind from blowing off the grass grass.

two。 Snowfall day management: 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 rolling is also difficult, but also easy to crush the scaffolding. Therefore, open the grass before the snow, after the snow stops, clear the snow, and then put down the grass. In the deep winter snowstorm, the outside temperature is low, do not uncover the grass, otherwise the strawberries in the shed will be frozen.

Management measures: heavy snow on the grass, easy to crush the scaffolding, it is necessary to remove the snow on the grass, but also remove the snow next to the shed wall, to prevent snow melting through the soil into the shed, not only take away the heat, but also damage the shed wall. Sweep 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, reasonably control the temperature of the greenhouse, and 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. To improve the light, uncover the grass early during the day, but not all at once, in case the light is too strong after the snow, causing strawberries to lose water and cause permanent wilting.

3. Cloudy and foggy day management: there are often cloudy and foggy days in winter. in this weather, the light in the greenhouse is not as good as that in sunny days, the air relative humidity is more than 95%, and the indoor temperature is below 15 ℃, which not only limits the photosynthesis of strawberries, reduces photosynthates, and delays the ripening period of strawberries, such as overcast and foggy days in the flowering period of strawberries, will greatly reduce the fruit setting rate of strawberries, produce abnormal fruits, and lead to the decrease of yield and the deterioration of strawberry 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 carried out at night and ventilated for a short time around noon. The temperature in the shed is controlled to be about 20 ℃ during the day and above 10 ℃ at night. The third is auxiliary pollination. During the flowering period of strawberries, rearing bees, assisting pollination, and pollination by bees can increase the fruit setting rate by 50% to 70%, and improve the yield and quality of strawberries.