Application Effects and Techniques of Insect Net in Protected Vegetable Cultivation
2026-08-12
The insect-proof net is a new type of covering material manufactured by drawing and weaving polyethylene (PE). It looks similar to window screen. It boasts high tensile strength, UV resistance, heat resistance, water resistance, corrosion resistance and anti-aging properties. Non-toxic and odorless, it has a service life of 4 to 6 years. It retains the merits of shade nets while overcoming their drawbacks, making it worthy of extensive promotion.
1. Covering Methods and Effects
Insect-proof nets are mainly used to cover small and medium-sized tunnels. Full-cycle continuous covering is recommended. Its main effects are as follows:
(1) Pest Prevention
Summer and autumn witness frequent outbreaks of pests such as imported cabbageworms, diamondback moths, Spodoptera litura, cabbage moths and beet armyworms. After covering with insect-proof nets, the fine mesh and year-round coverage block adult pests from flying or crawling into the growing area, forming an artificial barrier in the field to effectively prevent pest invasion. Nets of 20–30 mesh can prevent damage from major pests inside greenhouses, including leafminers, aphids, flea beetles, imported cabbageworms and diamondback moths, achieving excellent pest control results.
(2) Prevention of Viral Diseases
Vegetable viral diseases are generally transmitted by aphids, planthoppers, whiteflies and other pests. By blocking these pests, insect-proof nets cut off transmission routes of viral diseases and reduce their incidence in vegetables.
(3) Reduction of Pesticide Consumption
Without insect-proof nets, vegetable production relies heavily on insecticides, especially in summer and autumn. Frequent pest outbreaks increase cultivation difficulty, leading to frequent and heavy application of chemical pesticides. With insect-proof net covering, pest populations drop sharply or pests fail to appear. This greatly cuts insecticide usage. In some cases, no insecticides are needed throughout the growing season, and vegetable quality is improved accordingly.
(4) Resistance against Typhoons, Heavy Rains and Hail
In summer, strong winds, heavy rains and hail cause mechanical injuries to vegetables, resulting in lodging and seedling death. Thanks to the fine mesh and high mechanical strength of insect-proof nets, they perform remarkably well against heavy rain erosion. During the plum rain season, concentrated heavy rainfall often causes severe losses or total crop failure for leafy vegetables. When covered by insect-proof nets, raindrops strike the net and turn into fine drizzle with greatly reduced impact force, which facilitates vegetable growth and development. In addition, insect-proof nets can withstand strong winds and hail.
Application Effects and Techniques of Insect Net in Protected Vegetable Cultivation
2026-08-12
The insect-proof net is a new type of covering material manufactured by drawing and weaving polyethylene (PE). It looks similar to window screen. It boasts high tensile strength, UV resistance, heat resistance, water resistance, corrosion resistance and anti-aging properties. Non-toxic and odorless, it has a service life of 4 to 6 years. It retains the merits of shade nets while overcoming their drawbacks, making it worthy of extensive promotion.
1. Covering Methods and Effects
Insect-proof nets are mainly used to cover small and medium-sized tunnels. Full-cycle continuous covering is recommended. Its main effects are as follows:
(1) Pest Prevention
Summer and autumn witness frequent outbreaks of pests such as imported cabbageworms, diamondback moths, Spodoptera litura, cabbage moths and beet armyworms. After covering with insect-proof nets, the fine mesh and year-round coverage block adult pests from flying or crawling into the growing area, forming an artificial barrier in the field to effectively prevent pest invasion. Nets of 20–30 mesh can prevent damage from major pests inside greenhouses, including leafminers, aphids, flea beetles, imported cabbageworms and diamondback moths, achieving excellent pest control results.
(2) Prevention of Viral Diseases
Vegetable viral diseases are generally transmitted by aphids, planthoppers, whiteflies and other pests. By blocking these pests, insect-proof nets cut off transmission routes of viral diseases and reduce their incidence in vegetables.
(3) Reduction of Pesticide Consumption
Without insect-proof nets, vegetable production relies heavily on insecticides, especially in summer and autumn. Frequent pest outbreaks increase cultivation difficulty, leading to frequent and heavy application of chemical pesticides. With insect-proof net covering, pest populations drop sharply or pests fail to appear. This greatly cuts insecticide usage. In some cases, no insecticides are needed throughout the growing season, and vegetable quality is improved accordingly.
(4) Resistance against Typhoons, Heavy Rains and Hail
In summer, strong winds, heavy rains and hail cause mechanical injuries to vegetables, resulting in lodging and seedling death. Thanks to the fine mesh and high mechanical strength of insect-proof nets, they perform remarkably well against heavy rain erosion. During the plum rain season, concentrated heavy rainfall often causes severe losses or total crop failure for leafy vegetables. When covered by insect-proof nets, raindrops strike the net and turn into fine drizzle with greatly reduced impact force, which facilitates vegetable growth and development. In addition, insect-proof nets can withstand strong winds and hail.
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