Greenhouse construction needs to meet four elements

First, the terrain

In order to obtain better lighting conditions and facilitate the creation of basic equipment in the field, the places created by the greenhouse are easy to be flat, open places or gentle slopes below 10 °C and southward. These local sunshine times are long and long. In the early spring, the temperature rises rapidly, which is very suitable for the creation of greenhouses. In addition, the terrain has a great impact on flood control and drainage in the field, and it also has a great impact on the capital construction of infrastructure equipment, such as the accumulation of water in low-lying areas. All kinds of pipe network investment is large.

Therefore, before the greenhouse is built, it should be more specifically understood and summarized in consideration of the elevation, elevation, features, and geomorphology of the site.

Second, the soil

The soil condition is an important factor in determining the basic conditions suitable for the cultivation of the field, irrigation, drainage, etc. The soil with high soil, thick soil layer, low groundwater level and smooth drainage (such as sandy loam) is suitable for the creation of outstanding soil in the greenhouse. In particular, in the greenhouse of natural soil culture, soil characteristics are particularly important; in the modern greenhouses, in order to prevent continuous cropping and soil-borne diseases, the soil-free soil can be fully utilized.

Third, the weather

Some meteorological conditions in the greenhouse-building area have a large impact on the creation and use of greenhouses, such as partial temperature conditions, partial wind direction, wind pressure and snow pressure, and rainfall conditions. Outstanding partial temperature conditions can reduce greenhouse heating costs and The investment of heating and insulation equipment; outstanding wind direction is conducive to greenhouse cooling and ventilation; and rainfall can affect the construction and irrigation methods of greenhouse water storage equipment. Among the above factors, special attention should be paid to the impact of changes in some wind pressures on greenhouse safety, and to prevent areas with large changes in wind pressure, such as offshore, mountain passes, and typhoons, from reducing the impact of wind damage. If it is necessary to create a greenhouse in this type, it is necessary to carry out special planning and adopt appropriate reinforcement measures at the time of creation. In addition, it is not appropriate to create greenhouses in some areas.

Fourth, the surrounding environment

In the greenhouse production, if the air, water or soil is polluted, it will seriously affect the quality of the greenhouse crops and even the public health. Therefore, industrial enterprises such as chemical plants, metal factories and pharmaceutical factories should be prevented from being polluted around the greenhouse. Paper mills, cement plants, electroplating plants, etc., especially the downwinds of these factories or the groundwater and rivers, are not suitable for greenhouses.