Control of environmental conditions, irrigation and drainage of the greenhouse

Control of environmental conditions

Greenhouse The chemical activities carried out in the photosynthesis process of plants are directly affected by the environmental conditions. Photosynthesis depends on factors such as temperature, light intensity, availability of water and food.

Plant respiration is different with respect to the ambient temperature. The recommended temperature range for most greenhouse plants, which leads to the highest photosynthetic efficiency, is something between 50 and 85 degrees Fahrenheit. Therefore, regardless of what the greenhouse is used for, its environment must be controlled; This work is necessary for the health of greenhouse plants.

Irrigation of greenhouses

Providing moisture is one of the important parameters for the growth and development of plants. After knowing the humidity needs of plants, they are placed in greenhouses
They are replaced by themselves, that is, not all plants are kept in the same type of greenhouse. At specialized and large levels, each greenhouse
It is considered for a product or a number of similar products with the same needs.

Types of irrigation methods are briefly as follows.

Surface irrigation (gravity):

Surface irrigation systems have low efficiency and high water loss. At the same time, it causes leaching of solutes, increase
The growth of weeds and the occurrence of various fungal and parasitic diseases and decay. These systems are in the form of drip and strip irrigation
is executed

Pressure irrigation:

1- Rain irrigation: The purpose of rain irrigation is to evenly distribute water to all plants and reduce the ambient temperature and increase humidity. Water consumption efficiency is 50%. The high initial cost is one of the disadvantages of this system.

2- Drip irrigation: In this method, water, chemical fertilizers and other substances needed by the plant are provided to the plant in a solution form by droppers installed on the side pipes. The efficiency of water consumption is 90% and because of the drippers on the side
the bush or the stem of the plant is placed, the possibility of growth and development of weeds is lost.

Greenhouse drainage

One of the important things in building a greenhouse is to pay attention to the drainage of the greenhouse. In areas with hard-textured soils and sub-layers
Impenetrable earth, by placing porous clay pipes on the substrates or by other innovative methods, the necessary arrangements in the direction of
They think of improving drainage.