Problems needing attention in greenhouse maintenance

As an important agricultural production facility and special daylighting building, greenhouse has become an important indicator to measure the quality and service life of greenhouse, including its light transmittance, thermal insulation and durability. At present, the design life of domestic greenhouses is generally 5 to 15 years. Therefore, in order to prolong the service life of the greenhouse, improve the performance effect, and produce high-quality agricultural products, it is very important to do a good job in the daily maintenance of the greenhouse.
1. Daily maintenance of covering materials
The roof covering material of the greenhouse has been exposed to the wind and sun for a long time, which is very easy to age, affecting the tightness, light transmission and heat preservation performance of the greenhouse. Therefore, the covering materials on the top of the greenhouse should be maintained every 2 to 3 months. The glass greenhouse and hollow plate greenhouse can be regularly washed with high-pressure water gun on the roof and wall, and the film greenhouse can be cleaned with a broom bound with light articles such as waste cotton battens. The sludge and leaves deposited in the gutter gutter shall also be cleaned. Check whether the glass has cracks, use glass glue to seal, and replace the damaged glass in time. The damaged hollow plate can also be repaired with sealant or adhesive tape. The damaged plastic film can be repaired with special film repair tape. The framework at the contact part between the film and the framework shall be wound with soft cloth or old plastic film to prevent the contact part between the film and the framework from aging and damage due to heat, wind and rain.
2. Maintenance of inner and outer sunshade
The internal and external sunshade net is the greenhouse construction equipment with high frequency of use except in winter. The internal and external sunshade net shall be subject to routine maintenance before and after use every year. Firstly, check the transmission system, including the commissioning of the motor, limit switch, stroke, etc., and add lubricating oil to the rack and gear for maintenance. Timely replace the falling and broken curtain support line and curtain pressing line, so that the curtain pushing rod and transmission shaft can move smoothly and the curtain cloth can be flexibly and smoothly expanded.
3. Maintenance of theme skeleton
The main structure of greenhouse, including seedling bed support, generally adopts hot-dip galvanized steel pipe as the main load-bearing structure. As the greenhouse has been in the high temperature and humidity environment for a long time, the anti-corrosion ability of the component surface will become one of the important factors affecting the service life of the greenhouse. Therefore, it is also important to regularly maintain the main framework of greenhouse construction and other metal materials every year. Tighten the loose screws at the connection of the components, conduct rust prevention treatment on the welding interface and the parts where the hot-dip galvanized layer is easy to rust due to external forces, use coarse sandpaper to polish, and then apply two layers of anti rust paint for protection.