Low winter temperatures make it very important to increase the ability of vegetables to resist low temperatures and resist freezing. Take some simple prevention and control measures to reduce losses in the event of freezing injury.
Select low-temperature vegetable varieties. In addition to planting cold-tolerant vegetables and semi-hardy-tolerant vegetables, the use of low-temperature-tolerant varieties should be taken into consideration for thermophilic vegetables such as eggplants, tomatoes, peppers, and cucumbers.
Seeds were treated at low temperature. Cold treatment of seeds will significantly improve the antifreeze ability.
Train strong seedlings. Preventing leggy can enhance the cold-resistance ability of vegetables, and if necessary, spraying chlormequat and booster can inhibit growth and achieve the purpose of cultivating strong seedlings.
Grab clear planting. Overwintering vegetable greenhouse seedlings should be planted on sunny days, and strive to complete the slow seedling process before the next cold flow, that is, after 3 to 4 days of sunny days.
Science irrigation. Advocate the use of drip irrigation or micro-irrigation technology or interline and less irrigation methods, so as to avoid excessive cold water injury causes serious problems.
Strengthen insulation measures. In greenhouses, heat preservation is the main goal, so that good light and good insulation are achieved.
After some leaves and vegetables of solanaceous fruits and melons have been frozen and damaged, the frozen leaves can be cut off when the leaves cannot be recovered, then the temperature of the greenhouse can be increased, and fertilizer and water can be applied to promote branching, so as to restore the flowering results.
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