How to prevent the disease of the gentleman s orchid, how to prevent the disease of the gentleman s

Symptoms: Yellowing of Junzi Orchid is also called green deficiency. Yellowing is caused by a sharp lack of water and iron.

The affected leaves appear milky white patches, or all turn yellowish-white, and in severe cases, wilt, shrivel, and wilt. There are many manifestations of yellowing of the Monarch Orchid: all the leaves turn yellow, which is often a symptom of solar fever.

The yellowing of the leaves from the tip is often caused by the fact that the culture soil is not completely rotten, or there is too much fertilizer and water, resulting in root burning. The yellowing of individual leaves is likely to be the result of fire, cold wind, or acid-base erosion. Sometimes the leaves of the orchid turn yellow, mostly because of nutritional deficiencies.

There is also a yellowing of the leaves, which is caused by insufficient light.

Prevention and control methods: In summer, the orchid should be placed in a shade, cool and ventilated place, irradiated with a shade of 50% light to prevent the occurrence of solar fever, and spray a new high-lipid film to prevent bacterial infection, improve the ability to resist natural disasters and improve the intensity of photosynthesis. To cultivate the orchid, it is necessary to use a slightly acidic humus soil that is well rotted and loose.

When the temperature exceeds 30, less or no fertilizer should be applied and the amount of watering should be reduced accordingly. When the temperature is high, spray water around the plant every day to cool down. Spraying the flowers at the bud stage of the Junzi Orchid can promote strong flower buds, hypertrophic petals, bright flower color, strong flower fragrance and prolonged flowering period.

In winter, the sun should be strengthened, and it is best to have a fixed time every day to sunbathe the Monarch Orchid. After such observation and management, Monarch Orchid rarely has yellowing, spraying new high-fat film to keep warm and antifreeze, and safely overwinter.

The disease is not known. The most powerful insect pest is the cotton scale, like cotton, the best way to deal with it is to spray 100 times the laundry detergent liquid, and spray it with water after drying, which is very powerful.

This situation is because Junzilan sees that there is less sunlight and more water. Cut off the rotten leaves... Don't water too much and let the sun bathe through the glass window (not in the sun). The white dots will slowly disappear. (I'm like this, the flowers grow very well).

Wash off the original soil with water, cut off the rotten leaves and roots, soak the whole orchid with carbendazim diluted solution, take it out for 10 minutes, slightly dry the water on the surface of the root system, and plant it in a pot on the new soil. That's it.

If you want to prevent disease, you should start from the control of temperature, watering, ventilation and diseased branches. The temperature should be stable between 15-25 degrees Celsius, pay attention to dry and wet when watering, do not leave stagnant water, strengthen ventilation to ensure that the air can flow, and cut off diseased branches should be destroyed in time.

1. Control the temperature

If the orchid suffers from a disease, then most of the reasons should be due to insufficient temperature control. Although the plant prefers a warmer environment, too high temperatures can easily lead to the growth of germs, and it is easy to develop diseases above 30 degrees Celsius, so the ambient temperature should be stable between 15-25 degrees Celsius.

2. Control watering

If the soil moisture is too high, it will be easy for a large number of germs to breed, so it is necessary to keep the soil slightly moist when watering, and it must not leave stagnant water.

3. Strengthen ventilation

A large number of germs will breed in the case of long-term closed, stuffy and airflow, and the high temperature and high humidity environment is most likely to lead to plant lesions, so we must ensure good ventilation when maintaining the plants, and put the buried plants in places such as balconies or windowsills to let them breathe fresh air.

4. Treat diseased branches

When the leaves of the orchid show signs of disease, we should cut off the infected leaves in time, cut off the treatment from the base, and then use the carbendazim solution diluted with about 500-1000 times the concentration of the carbendazim solution for disinfection and sterilization, if there is no treatment, the plant will soon be infected with the whole plant.

The maintenance of the gentleman's orchid needs to be carried out from the aspects of soil, fertilization, watering, temperature, and summer shelter.

1. Soil. Orchid was originally grown in southern Africa under the forest trees, the root system grows on the saprophyl layer for a long time, so if you want to raise it well, you need to choose the right soil, usually mostly loose and fertile, weakly acidic, humus-rich soil, such as coarse infiltration can be prepared with humus, ash and clean sand, and ensure that the soil moisture is about 40%.

2. Fertilization. In the process of fertilization, especially in winter, it is dominated by phosphorus and potassium fertilizers. When applying phosphate fertilizer, fishy water can be used, and when potassium fertilizer is applied, soot can be used.

Of course, you can also apply nitrogen, phosphorus and potassium compound fertilizer at the same time, which will make the leaves grow better. However, when fertilizing, it must be in moderation, and raw fertilizer and thick fertilizer should not be applied.

3. Watering. When watering it, it should not be too dry, nor too wet, and each watering should be thoroughly watered at one time, and when it is time for the buds to emerge, you need to water a little more. Then you can call the manuscript to water it every 20 days or so, and at the same time, when watering, you can apply a little fishy water.

In addition, if the temperature is too low, you need to reduce the amount of watering, and do not let the potting soil get too wet, otherwise the plant will rot roots.

4. Temperature. When the orchid grows, the most suitable temperature is about 20 degrees, but it cannot be lower than 10 degrees, otherwise it will inhibit the growth. Then, after the arrow, keep the temperature at about 18 degrees so that it can bloom normally.

5. Escape the heat. In the middle of summer, the temperature is often above 30, which is extremely unfavorable for the growth of Junzi Orchid. For this reason, it is generally common to build a shed to cool down.

You can also bury the orchid in the sand together with the pot (bury the basin), and then sprinkle water on the sand once a day in the morning and evening. In this way, the potting soil can be kept moist, and the main thing is that it can use the endothermic effect of the water evaporation in the sand to achieve the purpose of cooling.

Several common diseases of Junzi Orchid are: white silk disease, soft rot, anthracnose and so on. Prevention and control methods:

Disinfect the culture soil, cut off the diseased leaves immediately when the lesions are found, and sprinkle lime powder for disinfection, once the diseased plants are found, immediately pull out the diseased plants, remove them thoroughly, and place the pots in a well-ventilated and sunny environment to keep the potting soil moist.

The soil should be very fertile, watered more, fertilized more, sprayed with nutrient solution, sprayed with disinfectants, and should do a good job in flood prevention and damage prevention measures, and should be scientifically managed.

1.When the disease of white silk orchid occurs, the stem near the root will have irregular lesions, and the epidermis will be soft, and then many white hyphae will appear, which will gradually expand and spread to the whole plant.

Prevention and control method: Before potting, disinfect the culture soil. To put it simply, you can put the culture soil in an environment of 60 for 24 hours. (It seems a bit difficult to operate at home, so let's disinfect it directly).

Observe frequently, and immediately cut off the diseased leaves if the lesions are found, and sprinkle lime powder for disinfection.

At the beginning of the disease, watering with carbendazim powder once a week, 2 to 3 times is sufficient.

2.Soft rot, when the disease occurs, there are pale yellow spots on the leaves, the plants are soft and rotten, and there is fungal liquid flowing out of the lesions.

Prevention and control methods: Once the diseased plant is found, immediately pull out the diseased plant and completely remove it. Cut off the rotten parts with a sterilizer, give proper light, and keep ventilation going.

If the decay is large, directly remove the diseased tissue, soak it in potassium permanganate solution for 1 hour, then rinse it with water and dry it, apply plant ash on the incision, and plant it in a different pot.

3.Anthrax occurs mostly in the humid and muggy season, and the onset site is the tip and edge of the leaf. Brown spots appear on the leaves at the beginning, which gradually expand, and the plants shrank and dry up in the later stages.

Prevention and control methods: water properly, place the pots in a well-ventilated and sunny environment, and keep the potting soil moist. Appropriate topdressing of phosphorus and potassium fertilizers. Plants grow in a suitable environment and grow healthily, which will reduce the probability of disease.

Once the plant is found to be diseased, immediately spray with a solution made of carbendazim 800 times, spray once every 6 days, 3 5 can be effective. Be sure to find it early**!

The common disease of Junzi Orchid is macular disease, prevention and ** is a science, come and see how I **.

The spring sunshine is soft, the temperature is suitable, is the best period for the growth of the orchid, timely spring maintenance of the orchid, for the growth of the year and even in the future of the development of the crack development and the flowering of pregnant buds.

Get out of the room at the right time: The gentleman's orchid that winters indoors should be moved outdoors for maintenance as the temperature rises in spring. The appropriate time to go out of the room is generally around the Qingming Festival in temperate areas, and it must be delayed for about half a month in cold areas.

It can also be mastered to go out of the room at a temperature of 15 or more. Before leaving the room, the window should be opened for ventilation, and after leaving the room, it should be placed in a leeward and semi-shaded place, and then moved to a sunny and air circulation place to fully accept the light.

Repotting and hail closing: The repotting time of mature Junzi orchid is generally carried out after flowering in spring, and plants that do not bloom in spring can be repotted when they are out of the room. After depotting, remove the soil and dead roots, and replace it with new culture soil to increase nutrients and permeability.

Plants that have been shaped are still cultivated in the original pots, and growing plants are cultivated in larger pots. For those with tiller buds at the base of the plant, and 3 or 4 leaves, and the plant height is more than 10 cm, it is advisable to combine repotting for division. Those that can take the roots are cut off from the mother plant with a sterilized knife, and those that cannot be taken are broken off by hand, and the wound is coated with sulfur powder or plant ash for antiseptic.

The rooted single plant is planted in small pots, and the rootless ones are cultivated with fine sand first, and then potted for maintenance after rooting.

Watering and fertilization: Due to the rising temperature in spring, the plants have entered the early stage of growth, and the water demand is increasing day by day, and the number of watering and the amount of water should be from less to more, but to keep the potting soil moist. After the slow growth of the orchid in winter, there are few nutrients in the body, especially after the flowering of the arrow, its nutrients are exhausted, and the nutrients must be supplemented in a timely and appropriate amount to meet the requirements of spring growth and development.

In spring, the plants are in the stage of extracting new leaves and leaf length and width, and nitrogen fertilizer should be the main fertilization. After leaving the room, thin liquid fertilizer is generally applied once every 10 days, and the concentration is flexibly controlled according to the growth and temperature. If compound fertilizer should be applied to the side of the pot, the amount should be less than more.

Promote buds and promote flowers: with the late winter and early spring arrows, early spring flowering habits of the junzi orchid, in order to avoid the low temperature and other reasons at this time, affecting the flowering, should be 2 3 weeks before the arrow, increase the indoor temperature, increase the amount of watering, 7 10 days to apply 1 time liquid fertilizer or half a month to apply 1 time to phosphorus and potassium-based compound fertilizer. You can also use 20 25 water to water the soil, 25 30 water to spray the leaves, as far as possible to keep the indoor temperature at 10 15, which can promote the plant to quickly draw arrows and pregnant buds, and bloom at the right time.

Flower one, that is, to water less, stop fertilizing, and move the plant to a low temperature to prolong the viewing time.

Pest control: As the temperature rises, the dormant pests and diseases begin to spread, invading the plants and affecting their growth and development. Baume's stone sulfur mixture can be used to spray plant leaves and bulbs, once every 10 days, 2 3 times in a row, which can not only prevent diseases, but also kill overwintering pests.