Single Tunnel Plastic Film Covered Greenhouses For Seed Breeding /
Beans
Product Description
Its durability must be considered in the construction of film
greenhouse. Its durability is affected by the aging resistance of
greenhouse materials and the bearing capacity of the main structure
of greenhouse. In addition to its own strength, the durability of
transparent materials also shows that the transmittance decreases
with time. The service life of general steel structure greenhouse
is more than 15 years.Especially in the plastic shed in winter,
this work is very important in early spring and low temperature
season. The film should be cleaned at noon and in the afternoon
when the temperature is high. The paint film dyeing and cleaning in
multi span greenhouse can be completed with self-made long soft
brush, and the pressurized dyeing water can be sprayed on the roof
of greenhouse with hose, and the cleaning can be conducted in
sections, and triangle ladder or scaffold can be used. In the use
of greenhouse
Professional Design
Two types of multi span greenhouse
1. Double layer film greenhouse
It is an improved type of 8430 film greenhouse widely used in North
China. A layer of arch and double-layer membrane are added under
the outer arch, which has good heat preservation performance and
poor light transmittance, and is suitable for flower breeding. The
investment cost is 160-200 yuan / m2.
2. Single layer film greenhouse
Conventional 8430 multi span greenhouse, common film greenhouse,
with a span of 8m, an opening of 4m and a column height of 3M. This
kind of greenhouse has low cost and can be equipped with electrical
equipment such as sunshade and ventilation. Widely used in the
south. The northern area is used as a shed (spring and autumn
shed). The investment cost is 100-150 yuan / m2 / m2.
3. Chemical products
In particular, some pesticides and fungicides containing sulfur or
chlorine will destroy the stability of agricultural film quality.
If sulfur fumigation is used in the greenhouse, sulfide generation
by gas combustion must be prevented. Because sulfide will seriously
reduce the service life of agricultural film. When burning sulfur,
pay attention not to let the temperature exceed 160 ℃, so as to
effectively prevent the generation of sulfide.
