The cause and manifestation of Orchid Diseases and insect pests and the Control of related drugs

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Name of │ disease and insect │ pathological changes of │ causes of │ drug prevention and treatment example │

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Black spots and white │ appear on the leaf surface of │ aphid │ of │ worm. Most of them occur when the spring is warm, │ must be sprayed with 20 jin of water, so that │ can be watered in winter.

│ damaged the │ spot of │, and the species were on the buds of peach aphid and cotton │. │ 3000 times, dichlorvos 800x dilution jet, oxidize Le │

│ aphid, black aphid and other │ │ fruits can also be used. │

│ ├──┼─┤

│ │ mite │ mollusk, egg white │ plant is too dense, the temperature is 2000 times of │ paraben plus water, and 1000 │ of fenoxone plus water.

│ │ worm │ color, species are red spiders, │ above 20 degrees │ times, in addition, with soaking tobacco water, oleander leaf branch juice spray washing also │

│ mite │ │ is effective. │

│ ├──┼─┤

│ │ with brown round black │ on the back of │ leaves is not ventilated, long-term wet │ must add water 1000 times, dimethoate soluble powder plus │

│ │ shell │ spots and stripes. The overweight of │ caused the │ water to be diluted by 1000 Mel 2000 times, and the │ was washed with beer.

│ │ worm │ is also effective. │

│ ├──┼─┤

When │ │ thistle was harmed by │, │ appeared on the leaf surface and │ killed orange fat flushing water 2000 times when the climate was warm, and │ was diluted by lindane, 1605, etc.

│ │ horse │ has small white spots so that the epidermis can be used by │ │. │

│ damage. │ │ │

│ ├──┼─┤

There is a layer of white wax powder on the surface of │ │ white │ │ occurs in the muggy climate │ monocrotophos add water 2000 times, chlorpromazine diluted spray (with │

│ │ powder │ │ seasonal │ see instructions for use) │

│ │ lice │ │

│ ├──┼─┤

│ │ other │ ants, snails, such as │ │ can be used to kill ants, Jiayu medicine, or put a hundred │ outside the vase.

│, lime powder. │

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Black spots on │ leaves of │ disease │ disease │ parent strain carrying pathogen or flower │ 20% virus An added water 500Mel 700 times spraying, 28% │

│ poisoned │ │ or stripes, gradually expanded │ tank, tools were not sterilized, │ carbendazim was added 1500 times, and │ was burned immediately when diseased grass was found.

│ died of │ │ disease. │ also has insect transmission, or │ cleaning tools to prevent infection, pay attention to ventilation, prevent high │

│ overflow too long │ temperature. (according to the information, Taiwan's "green green" and "Lan Jiasu" │

│ is more effective) │

│ ├──┼─┤

Brown disease appeared on the leaf core of │ │ black │. │ was overwatered, │ Xinwansheng powder 600x, steel sulfate, methyl topiramate, │.

│ │ rotted │ spots, and then enlarged like water stains. │ had too much water. │ carbendazim can be used after dilution. │

│ is black in │ │ disease. │ │ │

│ ├──┼─┤

│ │ carbon │ in leaves and base │ occurs in rainy season or mildew rainy season │ methyl topiramate with water 800x, 65% Dysen zinc powder │

│ │ gangrenous │ brown spots were then enlarged into │ nodes. │ add water 600 times, carbendazim 1000 times spray. │

│ of │ │ disease was semicircular and round. │ │ │

│ ├──┼─┤

│ │ mildew white │ carried bacteria on the soil surface and base of │. The invading leaves of │ were diluted with 1000 times of water and 2000 │ of water were added to Xunklin.

│ │ silk │ has white hyphae and then changes inside the │ buds, resulting in │ times of the roots and 500 times of pentachloronitrobenzene adding water. Pay attention to burning │ in the diseased plants.

│ │ disease │ maroon and blue sclerotia. │ is rotten. │ destroyed, soil replaced. │

│ ├──┼─┤

There are brown spots on the brown │ leaves of │ │. │ supercold wind and cold water stimulate │ mancozeb to spray 700times with water, and the above disease drugs are also │.

│ │ rust │ spot, gradual black plaque, caused by │. │ is available. │

│ │ disease │ withered the leaves. │ │ │

│ ├──┼─┤

│ │ soft │ first appeared water stains on the leaves, │ Rain Water or watered germ │ │ added water 600x, Bordeaux solution, methyl thiosulfide │

│ │ rot │ spots, blackening and │ caused by │ phosphorus and other dilution can be sprayed. │

│ secreted by │ from │ │ disease

│ ├──┼─┤

│ │ leaves │ start new buds such as ironing │ Rain Water too much, resulting in lack of │ green Fenwei No. 2 adding water 7000 times, 0.01% boric acid solution, │

│ │ spots are generally │, and then become dark brown │ boron. │ dimethophos and dithiocarbamate were diluted and sprayed. │

│ │ disease │ plaque │

│ ├──┼─┤

Caused by │ fungus on │ │ white │ leaves such as flour, too wet │ Bordeaux solution, copper sulfate, lime milk, topazine, multi-bacterial │

The dilution of │ │ powder like │ Ling is effective. │

│ │ disease │ │

│ ├──┼─┤

│ │ its │ such as leaf rust spots and other │ water control pay attention to ventilation │ "cortisone acetate" ointment, leek juice spray is also used to treat │

│ │ he │ mild disease │ │ effect. │

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Lu Qiju