1. Timely clear away fungi sack of Pleurotus geesteranus, roots, residues and all kinds of garbage in greenhouse, put an end to the places where are suitable for the living of mosquitoes and flies.
2. After clearing away all the garbage and residues, you could evenly spray lime powder and sterilize in mushroom greenhouse, especially pay attention to the corners of the greenhouse.
3. It is advisable to roll up the coverings of mushroom greenhouse such as plastic film and shading net, open the windows and doors, guarantee certain air flowing of the greenhouse and utilize the low temperature difference in winter to kill mosquitoes, flies and other pests.