How to choose the location of greenhouse technology knowledge

greenhouse site selection is very important. The site should be selected as flat as possible, the groundwater level should not be too high, and the mountains and buildings that block light should be avoided. For the planting and breeding industry users, sheds cannot be built in polluted places. . In addition, areas with strong monsoons should consider the wind resistance of selected greenhouses. The wind resistance of general greenhouses should be above level 8.

1. First of all, it is very important to choose the site of the greenhouse. The site should be selected as flat as possible, the groundwater level should not be too high, and the mountains and buildings that block light should be avoided. This is for planting and breeding users. , Sheds cannot be built in polluted places. In addition, areas with strong monsoons should consider the wind resistance of selected greenhouses. The wind resistance of general greenhouses should be above level 8.

2. After selecting the location, the orientation of the greenhouse must be considered. For solar greenhouses, the orientation of the greenhouse has a great influence on the heat storage capacity in the greenhouse. Now most areas in our country choose the direction of due south. The meridian direction of the location. According to experience, it is better for the greenhouse in the north to face westward. The west angle is preferably 5-10 degrees. This facilitates the greenhouse to store more heat. If multiple greenhouses are built, the spacing between the greenhouses should not be less than the width of one greenhouse.

3. Then choose the orientation of the greenhouse with uniform light. It is recommended to choose the north-south orientation for the greenhouses engaged in planting, that is, the heads of the greenhouse are on the north and south sides. This orientation can distribute the crops in the greenhouse evenly.

4. The last is the masonry of the greenhouse. The masonry of the solar greenhouse should be adapted to local conditions. The wall material of the greenhouse can be used as long as it has good heat preservation and heat storage capacity. The emphasis here is that the inner wall of the greenhouse must have a heat storage function in order to store heat. At night, this heat will be released to maintain the temperature balance in the shed. Brick walls, cement plaster walls, and earth walls all have heat storage capacity. The walls of the greenhouse generally adopt brick-concrete structure.

Precautions
The basic design of the greenhouse is determined according to the geological structure and local climatic conditions. The foundation is relatively deep in cold areas and areas with crisp soil. It is better to surpass the frozen layer. The greenhouse that cannot be produced throughout the year is deeper than the greenhouse that is produced throughout the year. A ground beam of 20 to 30 cm thick should be added to the foundation filled with rubble or river stone, and the wall should be built on the ground beam. The wall should have an insulation interlayer, which is filled with benzene board, perlite and other insulation materials. It is recommended to leave expansion joints on the wall longer than 70 meters. The rear wall of the greenhouse should be provided with certain ventilation windows according to the nature of the greenhouse for winter ventilation. The arch embedded parts should be installed before the wall masonry of the rainbow greenhouse is used for the installation of the arch. The height of the greenhouse wall is determined according to the span of the greenhouse. Generally, the height of the back wall of the 8m span greenhouse is 2.5m. The height of 7.5 meters across the back wall of the greenhouse is 2.3 meters.

The distance between the embedded parts of the greenhouse wall varies according to the type of greenhouse purchased, which are 0.8 meters, 1 meter, and 1.2 meters respectively. The embedded parts use T-shaped steel bars over Φ16mm, and the steel bars are 25 cm high, 6 cm exposed from the wall. Note: The first arch embedded part is buried at one-half of the distance from the inner side of the gable. For example, the arches with a spacing of 1 meter should be buried at 0.5 meters, and those with a 1.2 meter distance should be buried at 0.6 meters... When installing, use a steel tape with a length of more than 50 meters to reduce errors. In addition to burying the arch embedded parts, it is also necessary to bury the film line hook ring. In order to install the laminating line. The hook ring of the film line on the top of the back wall can be made of Φ12 steel bar, and the head of the T-shaped steel bar is bent into a hook or ring. The upper part of the hook ring with a height of 25 cm is about 8 cm above the wall. The laminating line hook ring should be placed on the outer side of the arch embedded part and the parallel distance from the arch embedded part is about 5-8 cm. The hook ring of the film line should be installed in the middle of the two arch embedded parts, one for each empty.

Keep the door on the side of the gable, and the greenhouse of the workshop needs to be built at one end of the greenhouse. The workshop should not be too high to avoid shading. At the front bottom corner of the greenhouse, a 25 cm wall skirt should be built with embedded parts. The main function of the skirt wall is to block wind, waterproof and fix the arch. The wall skirt arch embedded parts should correspond to the back wall arch embedded parts. The skirt wall also needs to be provided with a film line hook, which can generally be set on the outer side of the skirt wall. Correspond to the hook ring of the back wall laminating line. After the arch frame is installed, the skirt wall and the back wall should be plastered, and the welds should be wiped inside. When plastering, wipe the slope to the outside for drainage.