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 is mainly harmful to camellias, osmanthus, eucalyptus, orchids, pineapple, Podocarpus, San Weikui, etc., generally sick leaf rate of 15% -30%, weighing more than 50%.
Black spot disease mainly affects rose, rose, chrysanthemum, etc., and flower damage is more common, and the victimization rate is 20%-40%.
Anthracnose hazards are many species of flowers, common flowers are orchids, evergreen, camellia, milan, olivia, rubber tree, white orchid, clivia, bamboo grass, palmaceae flowers. The damage rate of flower leaves is between 10% and 30%, and serious is above 90%.
In addition, powdery mildew damage crape myrtle, peony, etc., blight damage Palmaceae flowers (seedling period), chrysanthemum and so on.
Scale insects are more common insect pests, often endanger the cycads, San Weikui, Bai Lan, sweet-scented osmanthus, camellia, smiling, turmeric, eucalyptus, eucalyptus, Fujian tea, palm and so on. 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 harmful to earthworms. The common ones are 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 damages leafhoppers. Tianniu and Cinnamomum dahliae are damaged on the coarse branches of eucalyptus, imitated maple, and cycad after transplanting, and the general strain rate is 10% to 40%. Whitefly, aphids, and Liriomyza are mainly harmful to flowers such as chrysanthemums, peony, and azaleas. The occurrence of nematodes is more common and difficult to find, and the target species are mainly evergreen, palmiaceae, chrysanthemum and so on.
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 control of pesticide application.
Disease prevention and treatment: leaf spot, black spot can choose to use thiophanate-methyl, carbendazim, mancozeb, copper oxychloride and other pesticides for prevention and control, anthrax disease with protection, so that 100 grams or on behalf of Sen Zinc, etc. Powdery mildew is controlled by extermination of disease, colloidal suspension and triadimefon.
Insect pest control: scale insects should be selected for rapid culling; fleas with valerian, clotris, amitraz and other control; fleas, white fleas with imidacloprid, Wan Ling and other prevention and control; spotted with insecticide double, Badan and other control; nematodes are controlled with Milur. In the event of drilling pests, in addition to spraying pesticides on the surface, pesticides can be used for perfusion, mixed mud and other methods to prevent and control.
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