Winter vegetable management technology

First, windy weather vegetable management

In the winter, windy weather occurs frequently, causing great harm to greenhouse vegetables, plastic greenhouses and other vegetables and open-air garlic production. Scratching the shed film, mulching film, scraping grasshoppers and other phenomena often occur, resulting in freezing of vegetables and open-air garlic in sheds. Damage to production should be given high priority.

Protective measures:

1. Inspect and reinforce the infrastructure of the sheds and frameworks in a timely manner to repair broken sheds. Close the bleed outlets before the strong winds approach, close the sheds, tighten the lamination lines, press the membrane ropes, and press the grasshoppers and other coverings.

2, garlic management should be timely pouring frozen water, tightly cover the film, the full coverage of the film, winter attention to protect the film, the damaged parts in a timely manner with the soil pressure, can be part of the film to cover a corn stalk to wind and film.

Second, rain and snow weather vegetable management

Rain and snow water tend to infiltrate the outer covering of the facility, causing increased pressure on the greenhouses and plastic sheds, causing the skeleton to be overwhelmed and breaking or being damaged. As a result, the sheds collapsed and the vegetables in the sheds were frozen and died. The vegetable production suffered huge losses.

Protective measures:

1. Pay attention to listening to and watching the weather forecast, paying close attention to weather changes and taking effective measures as soon as possible.

2. Put a layer of plastic film on the cover of grasshoppers and other facilities to keep the cover dry and improve the heat preservation effect.

3. Arrange special guards during the snow storm to clear the shed area of ​​snow in time and transport the snow out of the field to prevent the ground temperature from being reduced by the snow, so as to improve the temperature in the facility.

4, increase the pillars within the shed to improve the pressure resistance. Heavy snow is likely to increase the pressure on the shed, in order to effectively increase the pressure resistance of the skeletal structure, a row of movable pillars can be set up temporarily at a distance of 3 meters from the front of the greenhouse to improve the pressure resistance of the greenhouse.

Third, even the cold weather vegetable management

Solar energy is the main energy source for the production of vegetable facilities, and it has a great impact on the production of vegetables for several days in the winter. Low temperature and low light can easily cause stagnation of crops or freeze damage, resulting in reduced production.

Protective measures:

1, should listen to and watch the weather forecast in time, before spraying the cold weather day, spray the disease prevention agent or foliar fertilizer in advance, enhance the ability of the vegetable to resist low temperature.

2. Take measures to increase the temperature. In continuous cloudy snow weather, the temperature inside the shed is low and measures should be taken to increase the temperature inside the shed. Conditions can be used to warm the fire, heating furnace heating, and fully increase the temperature inside the greenhouse, to ensure the safety of vegetable plants through the cold season.

3, in the case of even cloudy, grass cover to cover early cover, make full use of scattered light to increase the lighting of the shed, hanging light curtain in the back wall of the shed to add light; timely cleaning greenhouse film, to ensure the clean and clean shed film, increase penetration Light rate; it is also possible to install fluorescent lamps, biogas lamps, etc. in the shed to make up light and promote plant photosynthesis.

4. To reduce the occurrence and development of vegetable diseases within the facility, it is crucial to reduce indoor air humidity as much as possible. In winter, watering should be strictly controlled. When the crops show drought, they can be poured into small water under the membrane on sunny days. When using pesticides to control vegetable diseases, dust or aerosols should be used as far as possible.

5, timely removal of the lower leaves of the plant, enhance the direct sunlight on the ground, increase the temperature, promote new root growth, but also reduce the amount of leaf transpiration, to prevent excessive water loss and wilting.

6, to prevent the occurrence of "flash" seedlings. On a continuous cloudy day, do not fully uncover the haystacks after the sudden turn of fine weather, prevent the seedlings that have experienced severe weather from seeing a sudden glare, and the temperature in the shed will suddenly increase, causing the seedlings to increase water transpiration and wilting. The method of management, that is, to expose the gaps, cover the gaps, and repeatedly reveal, and wait for the plants to no longer wilt and restore growth, then all unveiled.

7. For sheds that are severely affected by cold, remove the young fruit in time to ensure the nutrients needed for plant growth and prevent the premature decline of the plants due to low temperature and low light; remove unappropriate greenhouses and replant other vegetable crops in time.

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