Sunken sun-light greenhouse and application with sloping south wall

Abstract

The invention discloses a sunken sun-light greenhouse and application with sloping south wall, a greenhouse vertical south wall is changed into the sloping south wall, the structure of the original sunken sun-light greenhouse is not changed basically, the front house surface is extended integrally forward 1.2 m, the south wall of the south standing is shoveled to a slope. The greenhouse temperature is high than the compared greenhouse temperature and the ground temperature, the warming effect of the sunny day is more obvious than the cloudy day. The light intensity is stronger than the contrasted greenhouse, during the weather measurement period, the average light intensity increased to 126.12% compared with the reference greenhouse .a net photosynthetic rate, a stomatal conductance, a concentration of CO2 and a transpiration rate of the cucumber in the greenhouse were higher than the contrasted greenhouse. Thus it can be seen that, the structure of the sloping south wall temperature is simple, the improvement of the temperature and light conditions makes up for the deficiency of the shade of the sunken sun-light greenhouse south wall, the scheme is convenient for the winter-crossing cucumber to grow and fruit.

Description

technical field [0001] The invention relates to solar greenhouse technology, in particular to a sunken solar greenhouse with a sloped south wall and its application. Background technique [0002] Studies have shown that most solar greenhouses in China use soil walls as enclosure structures. The ground is dug down during construction, and the dug soil is used to build thicker soil walls to form a sunken solar greenhouse. This kind of greenhouse has low cost due to local materials, and makes full use of the stability of soil temperature. It has become a kind of greenhouse heat and heat storage capacity that is widely used in northern China. At present, there are many studies on the enclosure structure of solar greenhouses, the temperature environment of marginal areas and the thermal performance of greenhouses at home and abroad. Many scholars have also established mathematical models for the analysis of the temperature environment of greenhouses. However, the sunken solar gr...

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Problems solved by technology

However, the sunken solar greenhouse has a ground subsidence that is different from ordinary greenhouses, and a south facade is formed in the greenhouse, which makes the temperature and light on the south side of the greenhouse quite different from ordinary greenhouses, and this has an original structural form Most of the greenhouses are built based on experience, and the depth of excavation ranges from 50 to 180cm

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