The modern greenhouse is where that is controllable environmental conditions including temperature , light and humidity.
The purpose of construction of it is products-breeding outside of the season, water saving , the use of high quality seed and soil to achieve maximum profitability.
Greenhouse division:
A)based on the shape of the building , is constructed , to forms :three sided, two-sided and half duplex.
B)In terms of the greenhouse structure is included two groups: permanent and temporary.
Greenhouse durable , is different to based its gender ,polyvinyl chloride ( P.V.C) ,polyvinylidene fluoride (PVDF) ,aluminum ,wood , pipes of galvanized metal.
The greenhouse framework should be have a resistance against adverse conditions such as sever winds , snow accumulation.
Automatic ventilation valves glass , shielded doors , also are an important component of the greenhouse design.
At the work beginning , expense , may , limited , a guy to having a small greenhouse , but after a while can expend it.
Structure of components of the greenhouse:
1-The greenhouse structure
2-The transparent cover of the greenhouse
3-Greenhouse rigs
4-Corridors
5-Fans of the green house
6-Greenhouse work room
Advantages :
1-Resistant and very sturdy
2-comfortale and easy repairs
3-Insulator against heat and cold
4-Excellent light penetration
5-Reduce the time of harvest