The main types of flowers and insect pests in autumn are: leaf spot, black spot, anthracnose, blight, powdery mildew, scale insects, aphids, thrips, longhorned beetles, wood-moth moth, whitefly, spotted fly, and mite ( Red spiders, crickets, nematodes, etc. Leaf spot disease mainly affects Camellia, sweet-scented osmanthus, eucalyptus, orchids, pineapple, Podocarpus, Dioscorea, etc. Generally, the diseased leaf rate is 15% to 30%, and the weight is more than 50%. Black spot mainly damage rose, rose, chrysanthemum, etc., flowers are more common victims, its damage rate is generally 20% -40%. Anthracnose species are many species of flowers, and the common victim flowers are orchids, evergreen, camellia, milan, olivia, rubber tree, white orchid, clivia, bamboo grass, palmaceae flowers and so on. The damage rate of flower leaves is 10% - 30%, and serious is more than 90%. In addition, powdery mildew is responsible for crape myrtle, peony, etc., wilt disease damage palm flowers (seedling period), chrysanthemum and so on. Scale insects are the most common insect pests and often cause damage to cycads, streaky awns, white orchids, sweet-scented osmanthus, camellia, mirabelle, olivia, eucalyptus, eucalyptus, Fujian tea, and brown bamboo. In the environment where the planting density is high and the shade is high, the weight will occur. If the control is not timely, it may cause fallen leaves, dead branches, or even plant death. There are many types of flowers that are damaged by mites. Common types include citrus, eucalyptus, marigold, rose, rose, cycad, and bamboo. Autumn is the peak season for fleas and must be used to prevent and treat pesticides in time. In addition, the hummer often injures the leafhoppers. The hornbills and wood pod moths are damaged on the coarse stems of eucalyptus, imitation umbrella maple, cycad, etc. after transplanting, and the general damage rate is 10% to 40%. The whitefly, aphid, and spotted fly mainly damage chrysanthemums, peony, and azaleas. The occurrence of nematodes is more common and difficult to detect. The main target species are evergreen, palmaceae, and chrysanthemum. The prevention and control of flower diseases and pests should be based on prevention, and it is particularly worth noting how to avoid pollution caused by the pollution of the water source. In addition, it is necessary to prescribe the right medicine and prevent it in time. 1. In the flower field, we must promptly clean up the sick leaves and leaves, use a clean water source to water the flowers, and reasonably arrange the planting layout of the flower varieties in the field so as to reduce the repeated infection and spread of the disease and insect sources. 2. The right medicine, timely medication control. Disease prevention and treatment: leaf spot, black spot can use thiophanate, carbendazim, mancozeb, copper oxychloride and other pesticides for prevention and control, anthrax use protection, so that 100 grams or on behalf of Sen Zinc and other control, powdery mildew With extermination Weiwei, rubber suspension, triadimefon and other prevention and treatment. Pest control: Scale insects should be selected for speed culling, omethoate prevention and control, fleas with carbendazim, konjac, amitraz and other control, pupa, whitefly with imidacloprid, rice planthopper, Wanling, etc. Liriomyza was used for prevention and treatment with dimehypo and badan, while nematodes were treated with carbofuran and miral. In the event of drilling pests, pesticides can be used in addition to spraying pesticides on the surface. China Agricultural Network Editor
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