What should I do if an orchid is sick? What should I do if an orchid is sick and has worms?

Anthracnose, black spot, orange disease, rust spot and other foliar diseases of orchids. For the prevention and control of orchid foliar diseases, I adopt three prevention and control methods.

Foliar spray method, methyl tobuzin 1000 times solution, or carbendazim 800 times solution can be used arbitrarily with a drug of fine water spray sterilization and disease prevention, insect control can be mixed with dimethoate 1000 times solution or methyl phosphorus 1000 times solution to kill insects, but methyl tobuzin and carbendazim can not be mixed together, because the two drugs mixed together will produce resistance and lose the control effect. In the season of high temperature and high humidity, it is better to prevent and control once every 10 days or 15 days according to the proportion of liquid medicine.

Root irrigation and sterilization method: for the occurrence of black spot and anthracnose ......Root irrigation sterilization and disinfection can be taken for serious orchid disease plants, and the specific method can be used to water the potting soil or soak the pot with carbendazim 1 1000 times solution, and at the same time sterilize the foliar spray solution, which is carried out once a week apart, and the effect is very good.

Generally for the disease leaves of the orchid disease plant that has occurred severe black spot and anthracnose, the method of pruning is usually adopted, if a grass is encountered, it is a pity to cut it off, I take the principle of imitation medicine, and the diseased leaves of the orchid are injected to remove the disease, the effect is excellent, the specific method is to prepare 1 800 times the methyl tobuzin solution in advance, with a disposable 20 ml syringe, inhale 18 ml of the liquid medicine on the disease spot on the leaf surface of the orchid and inject the drug solution at the same time, and inject a needle on each disease spot. After three days, the lesion is gone, and a sterilized styrofoam pad is used to prevent the needle from pricking the hand.

The prevention and control method is to soak the tea bran and boiling water in a ratio of 1:5 for a day and night, and use it to pour the orchid pot, and at the same time pour the place where the orchid pot is placed and other orchid pots, which has a good control effect on snails. Spraying orchid plants with tea bran water has a good control effect on aphids and red spiders, up to 90%.

Tea bran water can also kill earthworms. Water the potting soil with tea bran water, and after a while, the earthworms will burrow into the surface of the soil and pick them out. Earthworms have different views on the merits and demerits of orchids, and the orchid world has different views.

There is a view that the earthworms in the pot, when they move, will destroy the hyphae of some orchid fungi and hurt the root tips of the orchid roots, and they are pests and must be eliminated.

There are many reasons why orchid leaves turn yellow:

If it is caused by improper watering, it is necessary to water according to the humidity of the air to avoid being too dry or too wet.

If it is caused by improper fertilization, it is necessary to apply thin fertilizer frequently, and do not apply thick fertilizer.

If it is caused by improper lighting, it should be avoided from direct sunlight and given it plenty of light in early spring and winter.

If it is caused by pests and diseases, it is necessary to choose the corresponding ** measures.

Turn the orchid into a pot and replace it with new soil and a new pot. Then spray some carbendazim to kill the fungus.

Planting of the garden.

When growing plants, the first and most important issue to consider is the soil, which you may have already encountered during the design of your garden.

Many of the new garden soils are now directly from construction waste, and many gardens have been planted for many years without any measures to protect the soil and increase soil fertility.

The better the soil fertility, the better it is for the growth of plants. If the topsoil of the plant is okay, but the subsoil has basically lost its fertility and needs to be replaced, then organic fertilizer must be buried, and the more the better.

When I say organic fertilizer, I mean a well-decayed mixture or manure, but it also includes mushroom-like compost and multi-purpose fertilizers. All of these fertilizers not only enhance soil nutrients, but also bind light, sandy soils together while loosening heavy soils.

In addition, the acidity and alkalinity of the soil must be determined, as different soil qualities will determine what kind of plants it is suitable for. Acidic soils are suitable for the growth of rhododendrons, such as rhododendrons and camellia. Alkaline soils are suitable for the growth of flowers such as clematis, drunken fish grass and carnations.

Neutral soils, on the other hand, can be used to grow a wide range of flowers. To determine the pH of the soil, you just need to buy some test materials.

There's also the big problem that irrigation water has different pH levels in different places, unless you have a bucket of stagnant water (because the rain is neutral), which is something that every gardener encounters. My advice is to plant according to the location, choose the right plants according to the nature of the soil, and let nature do its job. It would be unwise to let plants struggle to survive in an unsuitable soil environment.

1. Shellworms. Scale insects are the most common pests on orchids. Wild orchids in nature are also often infested by scale insects.

There are many kinds of scale insects, and the most serious ones are generally the shield scales. Striped mealybug, blue scale, brown round scale, red scale, black-spotted clam.

In addition, there are a variety of scale insects that can harm orchids, and scale insects mostly occur when the orchid is too wet and not ventilated. It ventilates and reduces moisture. And the following drugs are sprayed to kill, but the scale shell after its death is still attached to the orchid plant, and it must be manually removed if necessary.

25% quithion emulsion, add water 500 times.

20% dimethoate EC, add 500-800 times of water; 40% dimethoate EC.

then add 1oo0---500 times of water; For 60% dimethoate soluble powder, add 1oo0---2000 times of water.

Cotton oil soap with a 1:50 solution, spray 2-3 times continuously.

50% trichlorfon with 250 times solution.

50% malathion, with 800-1000 times the solution.

50% phosphine, with 800-1000 times the solution.

50% 1605 emulsifiable concentrate, with 2000---3000 times of liquid; 50% emulsifiable concentrate of methyl 1605 is used with 1500-2000 times of liquid.

90% fluoroacetamide raw powder, with 1000-l600 times liquid.

25% imidothion emulsion, with 400 times the solution.

50% dibromophos emulsifiable concentrate, with 500-1000 times liquid.

In addition, it can also be washed with tobacco stalks or garlic mashed and soaked in water, which can also have a certain effect.

2. Mites. This type of pest is a mollusk, round, milky white egg, lays 1---2 eggs per day, hatches in 5 days, and develops into an adult worm in 1 week. Common species are: spider mites, mites. These pests can be killed with the following drugs:

Kaile San 35% powder, diluted 1000 times.

Mites must die wettable powder, diluted 1000 times.

Exterminate mites with 2000 times the liquid.

Dilution of acarpine 1000 times.

Kill carb, with 1000 times the liquid.

In addition, drugs such as acaricide, 1605, malathion and so on can also be applied.

3. Thrips. Thrips are often harmful to orchid leaves, sucking epidermal tissue, causing small white spots to appear on the leaf surface, in addition to harming orchids, it can also harm citrus and some plants of the Araceae family.

Thrips can be used for lindane. 1605?Dimethoate and other drug sprays.

4. Aphids. Aphids, which are harmful to crops and horticultural flowers, can also be harmful to orchids. Aphids are the most common pests, and there are many species, which often occur when the weather is dry. Common ones are: peach aphid, lily aphid, cotton aphid, black aphid.

Aphids can be sprayed with drugs such as Tep, 1605, Malathion, Lindane, Insect Phosphorus, Dimethoate, Rotenol, etc.

In addition, there are ants. Slugs. Snails and other small animals are harmed. It can be booby-trapped with bait and mixed with arsenic with bran. trichlorfon, etc., sprinkled in places where they are often active; It can also be in the wet. Where they hide, sprinkle quicklime or table salt.

1. Proper shading: If the orchid has a dry problem, it may be because it has received too strong sunlight and has been sunburned. Cut off the parts of the plant that have been completely dried up, and then move the plant to a darker location with only scattered light for maintenance.

2. Spraying liquid: If you do not pay attention to ventilation when maintaining it, it may be infected by germs, so as to get sick and have the problem of dry leaves. Then prepare some sterilant and spray it on the cut and other diseased parts of the plant.

3. Increase watering: If the watering interval is too long when raising it, and the water-holding capacity of the planting material used is poor, then it may appear dry leaves due to lack of water. Prepare some clean water, wet the soil and increase the frequency of watering to keep the planting material moist.

Solution to orchid wilting:

1. Orchid watering wax stall is dry and wet, do not water the tap water and rainwater that have just been connected. Water frequently in autumn, and the potting soil should not be too wet in winter;

2. Orchid fertilization should be rather light than thick, orchid foliar oil shows that there is no shortage of fertilizer, and the foliage is dull and dull to fertilize. Orchids grow slowly, and when they grow vigorously, fertilizer is applied every 7 days. No fertilization is applied every year when it is hot, cold and rainy;

3. The long-term humidity required for orchid flowers should not be less than 70%, and the dormant period in winter is about 550%; The air humidity is higher at night than during the day. Sprinkle or spray the foliage of the orchid with water in the evening to ensure that the foliage can be dried again at night;

4. Orchids like shade and should not directly accept too strong light. In summer and autumn, if you want to go into Shenfan for shade, you need to reasonably adjust the light to help it grow robustly;

5. The best temperature for the vegetative growth of orchids is 20 to 35 degrees Celsius, and below 15 degrees Celsius, it enters reproductive growth. Take care to regulate the temperature around the orchid;

6. Orchids should not use pesticides, and pollution-free methods should be used to prevent and control hail diseases and insect pests. For orchid leaves that have dried up, when they are not too serious, the method of manual pruning is adopted, and the dry part is cut off with sterilized scissors;

7. When the air quality is not good, ventilate in time and keep away from oil fumes.

Look at your orchids if you're watering too much. Also, see if the soil in your pot is not breathable, and the excess water can't leak out!

Orchids love full sunshine, and the soil must be corrosive. If you choose to use household compound fertilizer, you have to wheeze a small amount later. Generally, newly planted orchids can only be watered once every three days.

And don't have too much water. It takes a month to water once a week! If you want to divide pots, you must wait until the next spring.

It is not possible to pot it all the time, because the orchid grows the slowest of all the flowers, and the orchid has the longest flowering period, which can be up to a month when flowering. Good orchids can bloom for two or three months.

Orchids should not be too dry, although they generally like strong light, but the water must also be sufficient, otherwise the orchid will grow more slowly, and more water will also suffer from roots.

It's best to ** your orchids. Is it too dark, is it too much water? If this is the case, don't touch the orchids in the pot, first place a well-lit place for the sun to shine, and take it back indoors sooner or later!

If there is a lot of water, then don't always be careful and let it rest too! It's best not to use your tea for watering though! If you have watered tea leaves before, it is best to replace the pot and soil with fresh red soil and heavy fertilizer!

Leave to fend for yourself, the laws of nature.

Do not put orchids outdoors in winter

Orchid rotten roots are the most likely to occur in orchid breeding, the roots of orchids rotten are not treated in time, orchids can only die, whether it is a novice in raising orchids, or a veteran of raising orchids will have rotten roots, veterans are experienced, the probability of rotten is small, that is, whether the orchid rotten roots or related to orchid technology.

When orchids suffer from root rot, Dada reduces the absorption and transport of water and nutrients, and the pathogen will spread along the grooming tissue to the whole plant, hindering application growth and reproductive growth, and even causing plant death. For the root rot of orchids, the prevention should be focused, and the specific operation is as follows:

1.The seedlings should be strictly sterilized, the cultivation medium should be coarse and sterilized, the potting should be standardized, and the cultivation container should be high and the holes should be many.

2.Watering and fertilizing at the right time and in the right amount; Timely and effective heat preservation and anti-freezing, cooling and moisturizing, and maintaining air circulation; Provide timely and reasonable nutrition.

3.Boosts immunity. In the spring, summer and autumn of each year, spray with aspirin 1000-1500 times solution.

4.Promptly**. When black rot, soft rot, white silk disease, bacterial wilt and other diseases are found on the leaf surface, timely spraying and root watering fungicides such as bacterium, carbendazim, dixon, killable, streptomycin, ethylphosphine, chloramphenicol, penicillin, etc., once a week, with a concentration of 700-1000 times the liquid; The concentration of ethylphosphine aluminumamphenicol and penicillin is 3000 times the solution.

Root rot, buying bucket heavy stubble can be solved, ** there are, I think it's okay, you can also try it.

The causes and solutions of orchid wilting are:

1. The potting soil is too dry and too wet.

If the potting soil is too dry, coupled with the dry climate in winter, the false bulb is easy to cause shriveling and other tissues due to excessive water loss and affect metabolism, the plant will grow poorly, and the leaves will wither, or even die. In winter, orchids are most afraid of excessive potting soil, too much water, and poor aeration of potting soil, which is easy to cause root rot and death.

Second, water and soil are not suitable.

The water used for watering orchids, it is best to use rainwater and river water, if well water or fresh tap water is used, the potting soil is often easy to become alkaline, the soil quality becomes poor, the potting soil is compacted, the water seepage is poor, and the aeration is poor, resulting in the potting soil is easy to be wet in winter, and the possibility of rotten roots of the plant is great. Therefore, orchid potting soil should be selected as acidic loose soil, and the pH should be between 5.

3. Improper watering methods.

Orchids should be watered in the morning or evening in other seasons, and in winter should be in the sun at noon as well, after watering and should be placed in the sun for 1 to 2 hours, until the water at the base of the leaf cluster is dry and then moved indoors, such as indoor watering, the leaves from the stem are easy to store water and become too wet and cause false bulb rot and cause plant death. Due to the different water requirements of different varieties of orchids, watering should be treated differently in winter, such as autumn orchids should be watered thoroughly before winter, while spring orchids should be moistened but not penetrated; When it snows heavily, Qiulan does not need to be watered, while Chunlan is better moistened; From the winter solstice to the light snow, autumn orchids and spring orchids can be watered or mastered eight points of dry and two points of wetness.

Fourth, improper use of pots:

It is better to use mud pots for cultivating orchids, the aeration of mud pots is better than that of glaze pots, the water seepage is fast, and the potting soil dries quickly, which is very suitable for orchid growth and is not easy to cause overhumidity for a long time, so that there are fewer pests and diseases. Avoid using glazed pots, especially in winter, which tend to cause root rot due to excessive wetting of the potting soil.

5. In addition, orchids should not be fertilized in winter, and fertilization in winter is the easiest to make orchids rot roots. In winter, the indoor temperature and humidity should not be too high or too low, otherwise the plant will grow poorly, and soot should be avoided, and the doors and windows should be properly ventilated when the room temperature is high; When the temperature is too low, pay attention to cold and freeze, so that the orchid can safely survive the winter and not die.