For a part of overwintering vegetables, the best way to prevent insect pests is to set up insect prevention net in advance, which can play an effective insect control effect and solve the problem that overwintering vegetables are prone to insect pests before and after planting. So, how to set it up?
When setting up the insect prevention net, first of all, we should choose the right mesh number. It is suggested that the vegetable farmers should choose 40 mesh insect prevention net. If the mesh number is low, the control effect will be poor. At the same time, the yellow spot should be hanged in the shed, 25-30 pieces per mu. The Yellow tendency of aphids and planthoppers should be used to trap and stick to kill a small number of pests entering the shed. Such physical control measures are the basic guarantee for the production of pollution-free vegetables and the reduction of pesticide use.
As the weather turns cold, aphids, planthoppers, thrips, Tetranychus Tetranychus, and cotton bollworm adults will fly to the warm shed to survive and overwinter. Therefore, it is necessary to set up insect net to cultivate overwintering vegetables.
The above is for you to introduce the erection of insect prevention net for overwintering vegetables. Please pay attention to the problems. I hope the above introduction can give you reference opinions on the correct use of insect prevention net.