The prevention and control of organic citrus pests and diseases should follow the principle of prevention and treatment. From the whole organic citrus park ecosystem, based on agricultural control, comprehensive use of physical control and biological control measures to create a disease that is not conducive to the occurrence of pests and diseases, but is conducive to the proliferation of various natural enemies. Environmental conditions, enhance biodiversity, maintain biological balance in the citrus park, and reduce losses caused by various pests and diseases.
　　 I. Strengthening agricultural technical measures
Plant shelter forests. Choose fast-growing species with no symbiotic pests and citrus; use disease-resistant rootstocks such as alfalfa and orange; carry out intercropping and grass cultivation in the garden; citrus advanced planting techniques choose shallow roots, dwarf stalks, and no symbiosis with citrus Diseased legumes, shallow root vegetables and grasses; strengthen cultivation management, such as soil, drainage, pruning, clearing, etc., reduce the source of pests and diseases, enhance the tree potential, and improve the resistance of citrus trees to pests and diseases.
Second, physical and mechanical control measures
　　 Use light to control pests, such as using black light to trap the chafer, leaf roller moth, etc.; use yellow fluorescent lamps to trap and kill the fruit moth. Use the chemotaxis of pests to control pests, such as adding pesticides in sweet and sour liquid to trap citrus fruit fly, pseudo-yellow leaf moth, etc.; yellow plate can be used to trap aphids.
　　 Third, biological control technical measures
　　 Protect and utilize natural enemies such as grasshoppers, ladybugs and parasitic wasps in local citrus orchards, as well as beneficial organisms such as frogs, spiders and birds, reduce the damage of human factors to natural enemies; introduce and propagate natural enemies and parasites of pests and diseases, such as Artificial introduction of stocking predatory cockroaches to control deciduous spiders, Australian ladybugs to control blasting, etc.; Protection and expansion of natural enemies' habitats (planting green manure crops or pastures between rows); Allowing the use of biologically derived pesticides such as Bacillus thuringiensis (BT) Plant-derived pesticides of source pesticides and bitter smoke agents.
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