Due to frequent cold air activities and large fluctuations in temperature, it has a major impact on the production of various types of vegetables. In order to ensure the safe growth of vegetables, prevent the occurrence of cold damage to vegetables and damage to greenhouses, all relevant vegetable bases and large vegetable farmers must take active measures to prevent and prevent loss of vegetable production, and ensure a stable supply of vegetable market and safe growth of seedlings in early spring. Should pay attention to the following five points:
Check and reinforce the booth. In order to prevent the wind from destroying the greenhouse film and freezing the vegetables in the facilities, it is necessary to reinforce the cover film for all greenhouses and effectively improve the insulation and temperature increasing effects of the greenhouse. In the event of snow, the snow on the top of the shed should be cleaned in time to prevent the snow from overwhelming the shed, and the sheds should be reinforced to prevent the wind and snow from opening the film. The broken membranes should be glued well, the sheds should be well supported, and the resistance of the sheds should be enhanced. Snow and snow ability.
Do a good job of freezing and keeping warm. Seedlings inside the shed, such as seedlings of green leafy vegetables, must be mulch + small shed + middle shed multi-layer coverage, where conditions can also use shade nets, turf, etc. to cover, to ensure free from frost damage. Open-air vegetables (especially leafy vegetables) should be strengthened in field management of freezing, and can be insulated and protected against cold by covering heat-insulating materials such as rice straw and thin films or applying organic fertilizers. For perennial vegetables such as leeks, it is during the period of basal fertilization that the combination of deep ploughing with organic fertilizers improves the soil and improves soil fertility.
Strengthen water management. It is necessary to clear drains in time to reduce the humidity of vegetable fields; to control watering, dredge field trenches, and deepen the gutters around the greenhouses so that no rain can accumulate in the vegetable fields after the rain to prevent waterlogging from causing damage due to poor drainage. After the rain and snow, the exposed vegetables should be drained in time to reduce the humidity in the field and prevent the waterlogging caused by the poor drainage.
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