Starting from June, under the scorching sun, "sunshade nets" have become a major promoted technical measure for garden planting and vegetable cultivation protection. In summer (June August), the main functions of covering the sunshade net are to prevent the exposure of hot sun, the impact of rainstorm, the harm of high temperature, the spread of diseases and pests, especially to prevent the migration of pests. After covering in summer, it plays a role in blocking light, rain, moisturizing, and cooling; After covering in winter and spring, it still has a certain insulation and humidification effect.
When covering the sunshade net, the management of the sunshade net should be strengthened according to weather changes and the different stages of growth of seedlings and vegetables. Before emergence, the net should be covered all day long. After emergence, the net should be opened at both ends in the morning and evening to see the light. When the sunlight is strong at noon, the net should be covered. It can be left uncovered all day in cloudy days, but the net must be covered in time before rainstorm.
The small arch canopy is covered with a sunshade net on the arched support of the thin film small arch canopy, suitable for shading, cooling, ventilation in summer and autumn, or frost prevention at night in early spring. It can also be used for rain prevention in rainy season or insulation at night in winter and spring.
A flat shed is covered on the prepared shed surface to form a 0.5-1.8-meter-high flat or inclined bracket, and a sunshade net is placed on the bracket for shade and rain protection.
Greenhouse coverage can be divided into single net coverage, mesh combined coverage, outer perimeter coverage, and inner greenhouse coverage. When single mesh and mesh are combined for coverage, the sides of the greenhouse are generally suspended about 1 meter above the ground and not covered. Covering around the perimeter of the shed, commonly used for insulation at night in early spring. Covered inside the greenhouse, usually not covered at a height of 1-1.5 meters from the ground.
