The anti insect net function
1. Insect control: After the vegetable is covered with insect control net, it can basically avoid the harm of various pests such as cabbage worm, Plutella xylostella, cabbage moth, night moth twill, yellow crocus beetle, ape leaf worm, aphids and so on. According to experiments, the control efficiency of the net against cabbage and cabbage, xylostella xylostella, asparagus pod borer, and Phytophagus Americana was 94-97%, and the control efficiency against aphids was 90%.
2. Disease prevention: Viral disease is a devastating disease on many vegetables, mainly caused by insects, especially aphids
Pass the disease. As pest control net cut off the main way of transmission of pests, therefore, greatly reduce the infection of vegetable virus, control efficiency of about 80%.
3. Adjust the temperature, soil temperature and humidity: the test shows that: hot July to August, in the 25 mesh white insect control net, the morning and evening temperature is the same as the open ground, and sunny day at noon is about 1℃ lower than the open ground. Early spring March to April, the temperature in the insect-proof net covered shed is 1-2℃ higher than the open ground, 5 cm ground temperature is 0.5-1℃ higher than the open ground, can effectively prevent frost. Insect-proof net room rain can reduce the precipitation in the net room, sunny days can reduce the evaporation in the net room.
4. Blocking strong light: high light intensity in summer, strong light will inhibit the vegetative growth of vegetable crops, especially leafy vegetables, and insect control net can play a certain role in shading and preventing direct light, 20-22 mesh silver gray insect control net generally shading rate of 20-25%.
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