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查明北京园林花卉上发生的叶螨主要为二斑叶螨,其次为朱砂叶螨和山楂叶螨等。已发现有16科约32种花卉受二斑叶螨为害。温室中花卉被害尤为严重。露地花卉因种类不同其为害严重时期也有差异。二斑叶螨在温室中表现为部分滞育现象,因花卉种类不同其滞育率有4.4～57.0％的差别。
Identification of Beijing garden flowers spider mites occur mainly two-spotted spider mite, followed by vermilion spider mite and hawthorn spider mite. It has been found that about 16 species of about 32 kinds of flowers by two-spotted spider mite damage. Flowers in the greenhouse are particularly badly damaged. Open flowers due to different types of their serious period also have differences. Tetranychus urticae showed some diapause phenomenon in the greenhouse, and its diapause rate varied from 4.4% to 57.0% due to different flower types.