Most vegetables are grown in greenhouses in winter. When the cold wave hits, farmers need to pay attention to the management of greenhouse vegetables. If you encounter low-temperature disasters, you can refer to the following points:
1. Grab the affected vegetables and strengthen field management.
Farmers should pay close attention to weather changes and try to catch vegetables on the ground before extreme weather arrives. If the vegetables are planted in open field, they should be harvested in time after being affected by the disaster. The frozen vegetables can be placed in a dark and ventilated place and slowly thawed in order to restore the value of their products to the greatest degree. Before the harvest period, vegetables should be strengthened to manage the fields, remove frozen and rotten leaves and rotten fruit as soon as possible, remove dead plants, pay attention to pruning and top dressing, improve plant resistance, strengthen disease prevention and control, and build simple temperature-increasing facilities to reduce low-temperature damage.
2, snow removal, reinforcement facilities
In rain and snow and freezing weather, snow or ice in the roof of the greenhouse should be removed as soon as conditions permit to prevent the collapse of the greenhouse. After the sunny days, we must seize the time to reinforce the facilities supporting steel pipes, cement piles, etc., increase the bearing capacity, and compress the shed film so as to protect the disaster prevention effect of vegetable facilities under low temperature weather.
3, increase the temperature in vegetable facilities
It is suggested to increase the temperature in the shed by adding small arches, covering films, stoves, smoke, etc. in the shed. The conditional vegetable facilities can use artificial light to ensure the light in the shed. At the same time, proper ventilation and humidity should be taken to increase the temperature. At the same time, prevention and treatment of diseases occur.
4, timely replant, reduce economic losses
After the temperature rises, according to the specific circumstances, we can quickly replant the cabbage vegetables, spinach, lettuce and other fast-growing vegetables to reduce the economic losses caused by the disaster.
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