Vegetable greenhouse

Abstract

The invention relates to a vegetable greenhouse which comprises walls and supports. The walls comprise the left wall, the right wall and the rear wall, the supports are in an arc shape, a light-transmitting film covers the outer sides of the supports, the inner sides of the walls are covered with wall heat preservation quilts covering the walls respectively, the light-transmitting film is covered with a heat preservation quilt, the heat preservation quilt comprises a composite foam layer and a waterproof heat preservation layer, and the heat preservation quilt is connected with a curtain rolling machine. The greenhouse is good in heat preservation effect in winter and at night, no heat source needs to be additionally arranged in the greenhouse, and partition irrigation and selective irrigation are facilitated.

Description

technical field [0001] The invention relates to the field of agricultural production, in particular to a vegetable greenhouse. Background technique [0002] Most agricultural vegetable greenhouses adopt plastic film structure, which has poor shading effect and poor air permeability. At the same time, the temperature change trend in the greenhouse is the same as that in the open field. The temperature difference between day and night is simple, and the sunlight is sufficient during the day. On rainy days or at night, the temperature inside the shed is generally a few degrees higher than outside the shed. External environmental factors have a great influence on the growth of vegetables in the shed, and the yield, quality and growth cycle of vegetables cannot be guaranteed. Therefore, it is necessary for the greenhouse to have the functions of sunshade, heat preservation and ventilation at the same time. A vegetable greenhouse disclosed in patent 201220499400 has the followin...

AI Technical Summary

Problems solved by technology

The limitations of this technical solution are: 1. There is no effective heat preservation measure in the shed. When the temperature drops, the heater is used for heating. However, when it is raining continuously or when the temperature is low in winter, it is difficult for the solar heater to provide enough heat to maintain the heat inside the shed. 2. Ventilation windows are set on the back wall, which is not conducive to the circulation of hot air in the shed, and the ventilation effect is not good; 3. When the temperature in the shed reaches the highest temperature, the effect of using shading nets for shading is not good, and the temperature cannot be effectively organized. continue to rise

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