Greenhouse Engineering Consulting

Reasonable control of the temperature in the solar greenhouse

1.Generally in the cold winter solar greenhouse cultivation of vegetables, in order to heat preservation, cold and anti-freezing, can use multi-layer cover, improve the insulation performance of facilities, control indoor temperature, to prevent cold, freezing damage.

2. The should hang the two-story sky curtain in the room at the right time, also should support a thin film small arch shed with bamboo slice and so on at the height of m bed, cover 1 layer film with bamboo slice and so on at 20 cm outside the small arch shed in the evening, do not need to warm also can ensure vegetable plant or seedling freeze damage without heating.

3. As long as it is sunny, try to "open the cover early ", master in the morning after the heat preservation quilt, short low temperature, rapid heating, to ensure that the indoor temperature does not decrease, in the afternoon when the indoor temperature drops to 20℃, to cover the heat preservation quilt in time to maintain room temperature. At night, pay attention to the heat preservation is all tightly compacted, the front foot of the solar greenhouse pressure firmly.

4. Even cloudy days, weak light, temperature control at 18-22℃, to prevent warm vegetables grow. In even overcast (snow) days, as little ventilation as possible, so that the greenhouse accumulated more heat. If the night temperature is low, make up the temperature properly.

II. Reducing air humidity in solar greenhouses

1. Meet continuous cloudy days, high air humidity in solar greenhouse, should stop watering, timely ventilation and dehumidification.

2. The indoor temperature is appropriate, we should insist on proper amount of top air, keep air flow and reduce air humidity in greenhouse.

III. Improving the Light Environment in Solar Greenhouse

1.Timely cover insulation quilt, as far as possible to prolong the lighting time of solar greenhouse.

2.Temperature indoor temperature should also be lifted in time to improve the intensity of light.

3. Should remove the dust on the film of solar greenhouse in time, keep the film clean, improve the transmittance and increase the intensity of indoor light. In cloudy days should also be timely uncapped insulation quilt, make full use of the scattered light on cloudy days, the solar greenhouse with the condition of light supplement can turn on the light at the same time.

Water and fertilizer management of greenhouse vegetables

1. Should choose sunny day watering, deep winter season as far as possible do not water, keep the ground temperature.

2. Vegetables show lack of water, choose a sunny day, using drip irrigation under the film, micro-spray irrigation or film under the small water, to avoid flood to reduce the ground temperature. Conditional irrigation water can be stored in the greenhouse to increase water temperature.

3. Winter vegetables grow slowly, need less fertilizer, topdressing should be mainly decomposed organic fertilizer and biological bacteria fertilizer, it is best to cooperate with drip irrigation, micro-spray irrigation, the implementation of integrated water and fertilizer management, but also choose sunny weather, with spraying disease prevention agents for foliar topdressing.

V. Caution against wind and snow

1. Strong wind weather, the pressure film rope should be pressed, and on the heat preservation quilt and the outer coating film, the fine steel cable with two jacket sleeves should be pressed horizontally according to the east and west, which can effectively prevent the strong wind from blowing the heat preservation together with the outer coating film.

2. Windy days to close the vent to prevent strong winds from blowing into the greenhouse.

3. Snow weather should be covered as early as possible, heat preservation cover with a layer of rain-proof cloth or film, and after the snow in time to clean the snow. Bamboo and wood structure greenhouse can also prepare some spare columns in advance, such as too much snow ,3 meters from the front of the greenhouse plus columns, in order to prevent the front snow collapse shed body.

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