Protected cultivation of strawberry, winter and spring will often encounter severe wind, heavy snow, heavy fog and other bad weather, although the frequency of these weather is very low, but once encountered, if not timely measures, strawberry production will suffer serious losses, will now Production management experience introduced to everyone:
Windy days in the management of greenhouse strawberries in case of wind, the shed film will bubbling up and down, if not timely management, the shed film will be blown, so that the shed in the strawberries suffered freezing damage. Management measures: Block all air vents tightly to prevent the wind from blowing into the shed to harm the strawberry plants and damage the film. Press the film and tighten, if necessary, put down some grasshoppers to hold the film firmly. If the wind blows at night, it is better to use a woven bag half a bag of soil to press on some grasshoppers to prevent the wind from scraping the grasshoppers.
Snowfall management Early winter and early spring snowfall, the outside temperature is not very low, may melt while snowfall, weeding grasshoppers, which not only affect the insulation, grasshopper rolling is also difficult, and easy to pressure scaffolding. Therefore, we should take measures to clear the grass before the snowfall, clear the snow after the snow stopped, and then lay down the grass. In winter, there is a stormy weather. The outside temperature is too low to open the grass, otherwise it will freeze the strawberry in the shed. Management measures: heavy snow pressure on the grasshoppers, it is easy to suppress the scaffolding, the snow on the grasshoppers must be cleared in time, and the snow next to the scaffolding wall must be cleared to prevent the snow from melting through the soil into the shed, not only Take heat and damage the wall. Clean the snow on the film during the day to enhance the transparency of the shelter. Raise the greenhouse temperature, adopt temporary measures to reasonably control the temperature of the greenhouse, and pay attention to prevent the occurrence of gas damage. To increase the temperature and prevent freezing, a small shed can be buckled in the shed. To improve lighting, pay attention to early exposing the grasshoppers during the day, but be careful not to expose them all at once so as to prevent the sunlight from falling into strong sunlight after the snowfall, resulting in a permanent loss of water due to severe water loss in the strawberries.
Management of overcast days The fog often occurs in winter. In this weather, the sunlight in the greenhouse is less than 1/5 of that in sunny days, the relative humidity in the air is above 95%, and the indoor temperature is below 15°C. Such bad weather not only limits the photosynthesis of strawberry leaves, reduces photosynthetic products, and delays ripening of strawberries. For example, a few days of foggy days during the flowering period of strawberries will greatly reduce the fruit setting rate of strawberries and cause malformed fruit, leading to a decline in yield. Poor quality. Management measures: First, increase artificial auxiliary lighting. An incandescent lamp can be used as a light source for heat treatment. Each 100 watt lamp is about 7.5 square meters, and is heated for 5 to 6 hours every day from 5 to 10 in the afternoon. The strawberry can increase production by 30% to 50%, and the deformed fruit can be reduced by 50%. The second is a reasonable temperature control. Temporary heating equipment is installed, heating is generally performed at night, and ventilation is performed for short periods of time before and after noon. The daytime temperature in the control booth is about 20°C and the nighttime temperature is above 10°C. The third is auxiliary pollination. During the strawberry flowering period, the stocking bees assisted in pollination and pollination by the bees can increase the fruit setting rate by 50% to 70%, significantly increasing the yield and quality of the strawberries, and increasing the economic benefits.
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