Greenhouse Insect Net Before And After The Coverage Of Three Points For Attention
In the process of using the greenhouse insect net, we must pay attention to a few notes, so as to be able to play a good use effect in the process of use.So, what should we pay attention to?That's the question I want to introduce to you today. Let's introduce this question.
1. First of all, in the selection of greenhouse pest control net, we should consider the mesh, color and width of the gauze.If the mesh size is too small and the mesh size is too large, the insect control effect cannot be achieved.And if the number is too much, mesh is too small, although can prevent insect, but ventilated bad, bring about temperature on the high side, shading is overmuch, go against crop growth.Generally should choose 22 ~ 24 objective insect - proof net.Spring and autumn season and summer, the temperature is lower, the light is weaker, it is appropriate to choose the white insect net;Summer in order to take into account shading, cooling, it is appropriate to choose black or silver gray insect net;In the area where aphids and viral diseases occur seriously, in order to drive away aphids and prevent viral diseases, silver grey insect control nets should be selected.
2. To ensure the coverage quality, the insect control net shall be fully closed and covered, and the surrounding areas shall be compacted with soil and fixed firmly with the film pressing line;The door that enters and exits big, in shed and conservatory, must install insect-proof net, notice to enter and exit when close immediately good.The small arched shed is covered with insect control net, and the trestle height is obviously higher than that of crops. Avoid the close attachment of vegetable leaves to the insect control net to prevent pests from eating outside the net or laying eggs in vegetable leaves.For the vent closed insect net, and transparent cover can not leave gaps, so as not to leave access to pests.Check and repair the holes and gaps in the insect proof net at any time.
3. Pest control treatment seeds, soil, plastic shed or greenhouse framework, frame, etc. Are likely to contain pests and eggs.Before planting vegetables, seeds, soil, shed framework, frame, etc. must be treated with insecticidal treatment after the cover of insect control net, which is the key link to ensure the cultivation effect of the cover of insect control net.
Above I introduce to you is the greenhouse insect net before and after the coverage, we should pay attention to a few problems, I hope that these information can be introduced to bring you some help.
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