In the event of snowfall, grasshoppers will become wet, which not only affects heat preservation, but also makes it difficult to roll the grass, and easily crushes the shed. The snow on the grasshoppers must be removed in time, and the snow beside the shed wall must be removed to prevent snow from melting Infiltration of dirt into the shed not only removes heat, but also damages the shed wall. Cleaning the snow on the shed film during the day enhances the light transmission of the shed. In order to increase the temperature and prevent frost, a small arch shed can be buckled in the shed. The grasshopper cannot be fully exposed at one time to prevent the strawberry from turning too sunny after the snow is too strong, resulting in severe dehydration and permanent wilting of the strawberry.
In case of strong wind, the shed film will swell with the wind and beat up and down. If it is not managed in time, the shed film will be blown and the strawberry in the shed will be damaged by freezing. All vents should be blocked tightly, and the film line should be tightly tightened. If necessary, a part of the grass will be put down to compress the film. If there is a strong wind at night, it is best to use a woven bag with half a bag of soil to press on some of the grasshoppers to prevent the windmill from blowing them off.
In case of cloudy weather, pay attention to increasing artificial auxiliary lighting. Incandescent lamps can be used as the light source for heating treatment. Each 100-watt lamp is about 7.5 square meters, and it is heated for 5-6 hours every day from 5 pm to 10 pm. Heating is generally performed at night, and short-term ventilation is performed around noon to control the temperature in the shed during the day at about 20 ° C and the night temperature above 10 ° C. During strawberry flowering period, pay attention to release bees for auxiliary pollination to improve fruit setting rate and strawberry yield and quality.
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