insect prevention
The control effect of 30 mesh insect control net was 90.85% ~ 96.33%, 87.13 ~ 91.41%, 91.67% ~ 100%, and 100%, respectively.In hot summer, it is recommended to use 20-30 mesh black or silver gray insect proof net, and 25-40 mesh white insect proof net is recommended in autumn and winter.
|
Mesh |
Standard mesh |
Mesh Hole (mm) |
Injurious insect |
Effect% |
|
（MM） |
||||
|
20 |
20×17 |
1.12×1.34 |
Cabbage worm, Cabbage borer, Diamondback moth, aphids, Hoppers, Beet noctuid, American spot fly, Twill noctuid moth |
80%-85% |
|
20 |
20×17 |
1.06×1.28 |
||
|
30 |
30×20 |
0.7×1.12 |
Aphids, Cabbage bugs, Vegetable borers,Trichoderma, Thrips, Tea wing bugs, Melon flies |
85%-90% |
|
30 |
30×20 |
0.63×1.1 |
||
|
40 |
40×25 |
0.48×0.86 |
Aphids, Cabbage worms, Vegetable borers,Hoppers, Thrips, Beet night moths |
90% |
|
40 |
40×25 |
0.42×0.8 |
||
|
50 |
50×25 |
0.36×0.87 |
Aphids, Whiteflies, Scale insects,Hoppers, Beet night moths,Pochards |
95% |
|
50 |
50×25 |
0.31×0.82 |
||
|
50 |
50×25 |
0.29×0.8 |
Injurious insect
