Hail net is a kind of protective net used to resist hail disaster in agricultural production. It is usually made of high-strength polyethylene (PE), polypropylene (PP), nylon and other materials. These materials not only have good weather resistance, but also can effectively disperse the impact of hail and protect crops from direct damage from hail. The structure of chào mạng is usually grid-shaped, which can provide a kind of "barrier" protection for farmland under extreme weather conditions such as strong wind, heavy rain and hail.
The design concept of chào mạng is based on the principle of physical protection, that is, through physical isolation or dispersion, the energy of hail can be effectively slowed down or transferred, thus reducing its damage to crops. At the same time, the chào mạng has light and air permeability, and will not have adverse effects on the normal growth of crops.
According to different agricultural production needs and use scenarios, there are many types of lưới chống mưa đás, which can usually be classified according to the following standards:
According to the material classification
Polyethylene (PE) chào mạng: PE is a common material for hail protection net, which has excellent tensile strength and weather resistance. Polyethylene lưới chống mưa đá is economical and widely used, which is suitable for the protection of most crops.
Polypropylene (PP) chào mạng: Polypropylene hail protection net has high anti-aging performance and ultraviolet resistance, and is suitable for areas with high temperature and strong light. In addition, the polypropylene lưới chống mưa đá is light in weight and easy to install and maintain.
Nylon chào mạng: Nylon chào mạng has very good tensile strength and elasticity, and is suitable for extreme weather conditions such as strong wind and heavy rain. Nylon hail screen has good flexibility and can withstand strong impact, but its price is relatively high.
Classification by mesh size
Large-hole lưới chống mưa đá: this net has a large aperture and is suitable for the protection of crops with high light demand such as greenhouse planting and orchard. Large-hole lưới chống mưa đá can effectively prevent hail from entering, and at the same time ensure that crops can get sufficient sunlight.
Small-hole lưới chống mưa đá: The mesh structure of small-hole lưới chống mưa đá is dense, which is suitable for preventing the influence of small hail or sandstorm and other environmental factors. This kind of net is mainly used in areas with large sandstorm and small hail, and is also suitable for protecting some fragile crops.
According to the protection intensity classification
Light chào mạng: It is suitable for mild climatic conditions and can effectively block the impact of small and medium-sized hail. Light lưới chống mưa đá is usually low in price and suitable for large-scale planting.
Heavy-duty chào mạng: This net is thicker and stronger, which is suitable for hail and windy weather. Heavy-duty hail screen is usually used in high-risk areas and can withstand strong impact.