The sudden drop in temperature in recent days has entered the winter. Only by managing strawberries in the winter greenhouses can we ensure high quality and high yields. Specifically do the following work:
During the flowering period of strawberry, the temperature in the greenhouse is kept at 25°C during the daytime and above 5°C at night, which is beneficial to flowering, fruit growth and maturation. During the harvest, the temperature should not be higher than 25°C during the day and 3°C-5°C during the night. When the temperature drops below 0°C, a layer of medium sheds and small bow sheds should be added to the greenhouse to protect it from freezing.
Control the humidity in the greenhouse, enhance ventilation and air humidity, affect the strawberry flowering and pollination, the humidity in the greenhouse is too high or too low, and the rate of opening the strawberry anthers is low, resulting in poor pollination and prone to malformation. Therefore, in the strawberry greenhouse after flowering, the relative humidity should be kept as 50%-60% as much as possible. When it is too dry, it should be irrigated, and the humidity should be large enough to reduce the humidity in the greenhouse.
When the plants manage the growth period of the strawberry, the leaves of each strawberry are 8-10 leaves, and the old leaves, residual leaves, diseased leaves, and the extracted pod stems should be promptly removed to ensure that the nutrients are concentrated to supply the fruits and the fruit and fruit of the strawberries are properly sparse. Excluding, removing fine and short fruit stems, small flowers, fruit without hypertrophy, or deformed fruit and pests and fruits, promote uniform and neat fruit types, and the morning market.
After fertilizing, increase the amount of fertilizing fertilizer in each batch of fruit after harvesting, and apply 5-6 kilograms of nitrogen, phosphorus and potassium compound fertilizer per standard shed, or apply 0.2% potassium dihydrogen phosphate solution to the leaves, separated by 5- 7 days of continuous spraying 2-3 times, fertilization can be combined with irrigation or watering.
Strengthen pest control. Greenhouse strawberry disease is mainly gray mold and powdery mildew. Prevent and control gray mold, ventilation should be strengthened to reduce the humidity within the greenhouse, can be controlled by 50% speed Keling 1000 times, can also be used "a smoke Ling" fumigation agent control; powdery mildew in the early onset of the timely spraying control , 40% Fuxing 5000 times or 15% triadimefon 1000 times spray control.
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