First, the main pests and diseases that harm fruit trees: 1. Hazards that damage the leaves: The leaf-feeding pests of the lepidopteran have the leaf miner, the gypsy moth, the apple hawk moth, the apple leaf curler, the cotton bollworm, etc., which are harmful to the apple, the jujube scorpion, the yellow thorn moth, etc. which harm the jujube; the leaf-feeding pests of the same wing, such as the hazard Apples, aphids of peach trees, pear mites, leaf mites, etc.; coleoptera pests, such as the terracotta chafers that endanger a variety of fruit trees; eye-catching red spiders, apple red spiders. The diseases mainly include brown spot disease, gray spot disease, leaf rust, powdery mildew, downy mildew caused by pathogenic fungi, perforation caused by pathogenic bacteria, and the like. 2. Pests that harm the fruit Mainly there are apples, pears, hawthorns, peaches, jujubes, peaches, heartworms, pears, heartworms, peaches and other carnivores; pears and pears that harm apples and pears; apple leaf curlers that eat apple peels; Diseases that are harmful to fruits are mainly ring disease, anthracnose, black spot, black spot, self-rot, black pox and mildew caused by pathogenic fungi. 3. pests and diseases that endanger the branches There are mainly beetles. For example, the white-spotted beetle that harms the walnut, the red-necked beetle that harms the peach tree; the jiding insects, such as the pear-like golden worms that harm the pear trees; the scale insects, such as the pears that harm apples and pears, Japanese tortoise shells that harm jujube trees; diseases mainly include rot, dry rot, and ulcer disease. Second, the promotion and application of pesticide varieties Pesticide selection should use biological pesticides and soil pesticides as much as possible. At the same time, you can choose high-efficiency, low-toxic, low-residue chemical pesticides, such as dichlorvos, trichlorfon, pyrethroids, carbendazim, methyl thiophanate, chlorothalonil, triadimefon, Bordeaux mixture and stone sulphur mixture. It is strictly forbidden to use highly toxic and highly residual pesticides. Highly toxic pesticides that are strictly prohibited in fruit tree production include: methamidophos, carbofuran, 1605, 3911, omethoate, insecticidal mites, chlorpyrifos, hexachlorocyclohexane, dicofol, methylisophosphorus, monocrotophos , methomyl and organic mercury preparations. Third, we introduce several high-efficiency and low-toxic biological preparation pesticides: Avermectin is the most suitable biologic pesticide in the production of pollution-free fruits. It has a strong pharmacological effect on resistant pests and mites. It has strong contact and stomach toxicity, rapid drug effect and complete prevention. It can effectively control aphids, red spiders, carnivores, pear hibiscus, moths, chafers and other leaf-eating pests. A new generation of nicotine insecticides of imidacloprid. It is a strong systemic and pollution-free insecticide that replaces omethoate and monocrotophos. It can effectively control various pests such as aphids, scale insects, pear hibiscus and leaf roller moth. Diflubenzuron III is a kind of biomimetic preparation pesticide, which is mainly based on stomach toxicity and has a contact-killing effect. It is resistant to rain and has a duration of 20 days and is safe for natural enemies. It can control the larvae of lepidopteran leaf-feeding pests that are harmful to fruit trees. Matrine matrine is a broad-spectrum plant insecticide that is low-toxic to humans and animals, has contact and stomach toxicity, and can effectively control lepidopter larvae and red spiders. It has the advantages of being highly effective against natural enemies, has strong permeability and long potency, and is an ideal agent for replacing acaricides such as dicofol and acesulfame. Green Weilei II is a striking microcapsule with the active ingredient of avermectin, which can effectively prevent adults of the beetles and geese. Polyoxomycin (also known as Baolian) is an agricultural antibiotic fungicide with good systemic absorption. It is a protective and therapeutic agent that can prevent and prevent ring rot, anthracnose, deciduous disease, white rot, etc. The disease is an ideal fungicide for replacing carbendazim and methyl thiophanate. The control of fruit stems and diseases can be controlled by fungicides such as rouge and fumei. Fruit leaf rust and powdery mildew can be controlled with fungicide powder rust. Agricultural streptomycin is a fungicide for controlling bacterial diseases and can be used to control bacterial perforation of peach and apricot. Laminated Fancy Plywood,Decorative Fancy Plywood,Fancy Plywood for Malaysian Weifang Joy Sea Trade Co., Ltd. , http://www.wfplywood.com
How to choose bio-pesticide for “green†fruit