How to raise a gentleman's orchid? With the clever use of larch and loose soil, the magnolia grows big and wide.

If the gentleman orchid is raised well, it can blossom several times a year, and some friends grow thin and do not blossom for several years, that may be your method is wrong, so how to raise the gentleman orchid in the end to grow well? In fact, the gentleman orchid does not need too much care, using this method to raise the gentleman orchid, the leaves are wide and big, and bloom twice a year.

1, soil, raise gentleman orchid, first of all, the soil must be matched, in the garden soil can add some fertile rotten leaf soil, pine needle soil, so that it is loose and fertile, but also can add some large particles of river sand to increase ventilation. When the soil is good, the magnolia can grow well and have many leaves.

Some friends use the larch soil in the mountain forest, mix some rotten chicken manure, pig manure, and soil together, loose, breathable and fertile, very suitable for the growth of gentleman orchid, the root system is particularly healthy.

2, light, gentleman orchid usually in astigmatism maintenance, summer can not be exposed to the sun, must be semi-shaded, if there is a small yard, or there are other larger potted plants on the balcony, it is better to put them under other plants. Spring and autumn is the fastest growing season, so gentleman orchid needs plenty of light every day in spring, autumn and winter.

But if the light is too strong, the leaves of Cymbidium will fade green and turn yellow, resulting in the appearance of yellow leaves. In winter, a small number of magnolia develop slowly, or stop their development, or even "dormancy". If a small number of plants are planted outdoors, it is necessary to build a high shade shed in the ventilated place to invent the premise of scattered light. Family potted plants can move into indoor ventilation belts to scatter light, or stop proper shading.

3. Water the surface of the basin soil when it is dry. Don't wait until the soil is completely dry before watering. Water more in summer, but there is no stagnant water in the basin.

Mainly do not overwatering, such as overwatering, stagnant water, excessive humidity, the young leaves of Magnolia simply appear light yellow, gradually old leaf tip withered yellow. Reflect on whether the leakage hole at the bottom of the basin can be blocked, loosen the soil, ventilate and change the soil. The foliar surface was sprayed with Zhongshengmycin or Chunramycin once every 7-10 days. Use 2-3 times to prevent and treat root bacterial infections. Anti-bacterial drugs such as agricultural oxytetracycline can also be used.

4. Change the pot. After the orchid has withered in spring, change the pot and change the soil once. Adding a small amount of organic compound fertilizer to the soil, or mature chicken manure and pig manure, will make its leaves grow very fast, wide and large.

5, fertilization, in June is a critical time for growth, you can apply more fertilizer, spray potassium dihydrogen phosphate to the leaves, bury a small amount of rotten chicken manure in the soil at the edge of the flowerpot, or some broken eggshells. Only with enough nutrition can the orchid grow vigorously and blossom.

Breeding gentleman orchid master the above points, want to burst the pot is actually not difficult, I hope that flower friends can learn from it.

Laugh at the gentleman Clivia nobilis Lindl. Laughing gentleman orchid map guide: laughing gentleman orchid how to raise / laugh gentleman orchid how to breed laugh gentleman orchid business card laugh gentleman orchid Clivia nobilis Lindl. Synonyms: classification: Orchidaceae: Monocotyledons class Aspartaceae: flowering: winter and spring Cymbidium (scientific name: Clivia nobilis Lindl.), is a plant of the genus Amaryllidaceae, distributed in southern Africa and Chinese mainland Hubei Province and other places, has been artificially introduced and cultivated. Plant height 38 cm, flowers drooping, orange-yellow, and with a little light green, narrow leaves, flower stems slightly shorter than leaves, leaf color dark green, elegant and solemn appearance. Introduction of Cymbidium (scientific name: Clivia nobilis Lindl.), is a plant of the genus Orchidaceae, distributed in southern Africa and Chinese mainland Hubei Province and other places, has been artificially introduced and cultivated. Plant height 38 cm, flowers drooping, orange-yellow, and with a little light green, narrow leaves, flower stems slightly shorter than leaves, leaf color dark green, elegant and solemn appearance. The morphological characteristics of Cymbidium are perennial herbs. The root is fleshy and grayish white. The persistent leaf base of the stem base of Cymbidium is bulbous. There are about a dozen basal leaves, thick, dark green, glossy, banded, 25-40 cm long and 3-3.5 cm wide, with rough edges. The flower stem of Cymbidium is extracted from the leaves, slightly shorter than the leaves; umbels terminal, with about 10-30 florets, 6 petals per floret, 6 stamens and 1 pistil. The colors of the smiling gentleman's orchid are orange, orange-red, crimson and so on. Flowers many, slightly pendulous when flowering; perianth narrowly funiculate, orange-red, inner perianth lobes lighter; stamens nearly as long as perianth; style long, slightly protruding from perianth. The flowering period of Cymbidium is from December to May next year, and the flowering period is as long as 30-50 days. Cross pollination shows that berries and fruits are green when they are not ripe, and it takes 8-9 months for seeds to mature. The ecological habits of smiling gentleman orchids like a warm and cool environment, with plenty of sunshine in winter and a little shade in summer. Loose and fertile rotten leaf soil is required. The flowering time is short and the color is light when the room temperature is lower than 5 ℃ in winter and stops growing when it is higher than 30 ℃ in summer. Laughing gentleman orchid requires air humidity 70% muri 80%, soil water content 20% Mui 30%, soil moisture is too large easy to rot roots. Cultivation techniques of Cymbidium the ramet and sowing propagation. Ramet, after flowering in spring every year, the offspring next to the mother plant will be removed and planted. If there is no fleshy root on the seed plant, it can be inserted in the sand first, waiting for it to take root in the basin. Sowing, indoor pot sowing in winter, room temperature should be more than 20 ℃, otherwise the seeds are easy to rot. The seedlings germinated 20-25 days after sowing, and the seedlings could not bloom until 4-5 years after sowing. The soil is suitable to use humus rich soil, this kind of soil has good air permeability, good permeability, and fertile soil, with slightly acidic pH6.5. About 20% sand grains are infiltrated into the humus soil, which is beneficial to root maintenance. The pot used in cultivation increases gradually with the growth of the plant, and the 3-inch pot is suitable for the cultivation of one-year-old seedlings. Change 5-inch pots in the second year, and then change into larger flowerpots in the next 1-2 years, which can be carried out in spring and autumn. The seedlings used for planting are planted in pots filled with nutritious soil in early spring from February to May. Generally, only one plant is planted in a flowerpot with a diameter of 25 centimeters. If the seedling does not have a well-developed corm, it should be planted in the sandy soil first, and then the root system should be cultivated and then transplanted into the pot. Because it is difficult to root directly into the planting basin installed above, if you do not have the conditions to find sand, you can also plant it directly into the basin, but it will take a little longer. Those who sow bulbs generally germinate 20-25 days after sowing; soak the seeds in warm water for about 40 ℃ for about 24 hours, sow the seeds 0.5-1cm under the topsoil, put the seeds downward and belly-up, and cover them with plastic film or glass after pouring water so as to improve the ground temperature and promote seed germination. If the temperature is too low, the seeds are easy to rot, when the temperature is about 20 ℃, the seeds will germinate in about 60 days, and the seedlings will not blossom until 3-5 years. Fertilization laughs that gentleman orchids like fertilizer, but too much fertilizer will cause rotten roots. In addition to applying base fertilizer, topdressing should adopt the method of "thin fertilizer and more fertilizer". Apply base fertilizer when changing pots. Apply fermented solid fertilizer every other month in spring and autumn, and then apply liquid fertilizer once a week, it is best not to topdressing. When the whole plant can rely on the nutrients accumulated in spring and autumn to slowly grow and apply solid fertilizer, peel open the basin soil and bury it 2 cm deep. Do not directly touch the root system to avoid burns. When applying liquid fertilizer, the best way for seedlings to apply liquid fertilizer is as follows: water 1:40 is better, large and medium flowers are better at 1:20, fertilization time is appropriate in the early morning, avoid splashing on leaves, watering should be timely after applying liquid fertilizer, but water does not need to be too much, on the one hand, dissolve fertilizer, on the other hand, the newly grown fleshy root can be rinsed to prevent and injure the new root. The types of fertilizers are different in different seasons. Partial application of phosphorus and potassium fertilizer in winter and spring, such as bone meal, etc.; partial application of nitrogen fertilizer in autumn, such as bean cake water; extra-root topdressing is commonly used in summer, spraying foliar with 0.1% potassium dihydrogen phosphate or calcium superphosphate, and extra-root topdressing can be carried out all the year round. Light in the whole process of cultivation, try not to let the plant be exposed to direct sunlight, can have about four hours a day in the scattered sunlight, too strong light will narrow the leaves. Laughing gentleman orchid summer avoid high temperature and hot sun exposure, should be placed in the air humidity and shady environment, pay attention to ventilation. The gentleman orchid is afraid of the cold in winter, so you should move it indoors and put it in a place with plenty of light. The room temperature is about 5 ℃ to survive the winter safely. If there are conditions, it is best to keep the ambient temperature stable between 15 and 25 ℃. The suitable temperature of Cymbidium is 15-20 ℃. When the plant growth is higher than 25 ℃, the plant growth is poor, and the excessive growth of leaves often occurs, which affects the flower bud differentiation. At this time, attention should be paid to ventilation and cooling; when it is lower than 10 ℃, the growth is slow; when it is below 0 ℃, the plant will freeze to death. Attention should be paid to cooling in summer, which can promote flower bud differentiation. The temperature difference between day and night is large, which is beneficial to the growth of Cymbidium, and the suitable range is 6-10 ℃. The leaves grow obliquely and upward on both sides and are arranged in a fan shape. During maintenance, the light direction can be adjusted so that the extension direction of the leaf is parallel to the light direction, that is, the tip of the leaf on one side points to the light source, the room points to the window, and the flowerpot is rotated 180 degrees every other week, so that the tip of the leaf on the other side points to the window. In this way, the growing leaves can be arranged neatly, the front looks like an open fan and the side looks like a line. It is also possible to control the leaves with a lead wire bent frame after a year of seedling growth, and remove the lead wire frame a year later, so as to prevent the leaves from growing crooked. If there are individual leaves skewed in the future, you can use black paper paste a paper cover to cover it, 10-15 days can be naturally straightened. Watering potted plants should not be watered too much, just wet. Plum rainy season from May to June to prevent Rain Water from rushing and showering, so as to prevent the roots and leaves from getting sick and rotting. Pay attention to spraying water to cool down during the summer high temperature period. Proper topdressing in autumn promotes leaf growth. Heating up and keeping the soil moist in winter is conducive to flowering. The main diseases of Cymbidium are soft rot, anthracnose, leaf spot, white silk disease and so on. The leaf blight is mainly harmful to the leaves, the primary reddish brown, the oval stripe disease is obvious, and the surrounding tissue turns yellow. It was found that the diseased leaves were cut off in time; appropriate potassium fertilizer was applied to avoid excessive water accumulation on the leaves; and 1000 times of carbendazim wettable powder was sprayed at the initial stage of the disease. In the process of cultivation, tools and substrates should be strictly disinfected, and 400-600 μ g / L penicillin and streptomycin were used to irrigate the roots at the initial stage of the disease. In severe cases, remove all the rotten parts, soak the rest in potassium permanganate solution for 1 hour, then rinse with clean water and replant. All the leaves of sunburn turn yellow, which is caused by direct light for a long time in summer. Shade cultivation should be used, and the yellowed leaves can be cut off. Anthracnose mostly occurs in the rainy and humid season, and the disease spot is mainly at the edge of the middle and lower leaves. Moist brown spots appeared on the leaves at the initial stage of the disease, and then gradually expanded into an oval spot, and concentric ring lines were produced on the spot. In the later stage, the spot dried up and many small black spots were scattered on it. Control methods, one is to remove dead branches in late autumn or early spring. Fallen leaves and cut off the diseased branches in time, and burned together; second, spray 65% zinc 600 times solution before the disease; third, reasonable fertilization and watering, pay attention to ventilation and transparent light; fourth, at the initial stage of the disease, spray 50% carbendazim diluted 500m 800 letter, or 50% Tob body fluid, or spray with 75% chlorothalonil solution diluted 600m 800 times. The phenomenon that Cymbidium can't pull out scape and blossom after pregnant bud often occurs in cultivation, which is called "arrow clip". It has something to do with temperature and fertilizer. The main reason for the arrow trap is that the temperature is not suitable. The florescence of Cymbidium is mostly from December to March, when the room temperature is less than 14 ℃, the temperature difference between day and night is very small, and the flowers grow slowly after extraction, which leads to the phenomenon of arrow entrapment. The solution is: when the flowers and plants are exposed, the room temperature should be raised to more than 20 ℃ immediately, and the room temperature at night should be about 12 ℃, so that the temperature difference between day and night can be more than 18 ℃. It can also be poured into the soil with 25 ℃ warm water to accelerate the arrow. When the room temperature is too low, plastic film can be used as a frame to cover the flowerpot and place it in the sun to increase the temperature to urge the arrow. Improper management of fertilizer and water will also cause "arrow entrapment" phenomenon, so it is necessary to apply enough fertilizer before flowering to promote the growth of buds and plants with sufficient nutrients. Flowers and plants need enough water to grow quickly, so keep the soil moist from outcrop to flowering and apply a small amount of liquid fertilizer. Crustaceans can be controlled manually, with bamboo sticks, small sticks, small soft brushes, etc., gently brush off the insects and soot, and then rinse with clean water. In the nymph stage, spray 40-100 times of the emulsion, spray. The distribution area of Cymbidium is native to southern Africa. Cymbidium is the most planted in Beijing and its vicinity. Most of them are introduced and cultivated for viewing. The function of laughing gentleman orchid is elegant and solemn, the leaf is narrow and long, the flower stem is slightly short, the leaf is in the leaf, the flower is orange, when it is open, it is in the shape of a bucket, it is a potted flower that decorates the meeting place during the Spring Festival, decorates the hotel and beautifies the family environment. Smiling gentleman orchid flower words laugh gentleman orchid represents the noble, gentleman wind. The thick and smooth leaves of the gentleman orchid stand upright like a sword, symbolizing the noble character of being strong and resolute and unyielding. Smiling gentleman orchid full flower appearance, bright colors, symbolizing wealth and auspiciousness, prosperity and happiness, so people widely cultivate. Xiaoxiaozi Orchid has cultivated more than 160 valuable varieties in China in recent years, which is a common flower variety in common families. Smiling gentleman orchid picture laughing gentleman orchid how to raise breeding methods to prevent diseases and insect pests

Cymbidium is a plant of the genus Orchidaceae, which is distributed in southern Africa and Hubei Province of Chinese mainland. It has been introduced and cultivated artificially. The following editor introduces you how to raise the laughing gentleman orchid, and brings you the introduction of the breeding method and pest prevention of the laughing gentleman orchid.

The introduction of smiling gentleman orchid

Orchid (scientific name: Clivia nobilis Lindl.), a plant of the genus Amaryllidaceae, is distributed in southern Africa and Hubei Province of Chinese mainland. It has been introduced and cultivated artificially. Plant height 38 cm, flowers drooping, orange-yellow, and with a little light green, narrow leaves, flower stems slightly shorter than leaves, leaf color dark green, elegant and solemn appearance.

1. Morphological characteristics

Laughing gentleman orchid is a perennial herb. The root is fleshy and grayish white.

The persistent leaf base of the stem base of Cymbidium is bulbous. There are about a dozen basal leaves, thick, dark green, glossy, banded, 25-40 cm long and 3-3.5 cm wide, with rough edges. The flower stem of Cymbidium is extracted from the leaves, slightly shorter than the leaves; umbels terminal, with about 10-30 florets, 6 petals per floret, 6 stamens and 1 pistil. The colors of the smiling gentleman's orchid are orange, orange-red, crimson and so on. Flowers many, slightly pendulous when flowering; perianth narrowly funiculate, orange-red, inner perianth lobes lighter; stamens nearly as long as perianth; style long, slightly protruding from perianth.

The flowering period of Cymbidium is from December to May next year, and the flowering period is as long as 30-50 days. Cross pollination shows that berries and fruits are green when they are not ripe, and it takes 8-9 months for seeds to mature.

2. Ecological habits

Smiling gentleman orchid likes a warm and cool environment, with plenty of sunshine in winter and a little shade in summer. Loose and fertile rotten leaf soil is required. The flowering time is short and the color is light when the room temperature is lower than 5 ℃ in winter and stops growing when it is higher than 30 ℃ in summer.

Laughing gentleman orchid requires air humidity 70% muri 80%, soil water content 20% Mui 30%, soil moisture is too large easy to rot roots.

How to raise a gentleman's orchid?

I. Culture methods

1. Reproduction

Split plants and sow and reproduce. Ramet, after flowering in spring every year, the offspring next to the mother plant will be removed and planted. If there is no fleshy root on the seed plant, it can be inserted in the sand first, waiting for it to take root in the basin.

Sowing, indoor pot sowing in winter, room temperature should be more than 20 ℃, otherwise the seeds are easy to rot. The seedlings germinated 20-25 days after sowing, and the seedlings could not bloom until 4-5 years after sowing.

2. Soil

Xixiao gentleman orchid is suitable to use humus rich soil, this kind of soil has good air permeability, good water permeability, and soil quality is fertile, with slightly acidic pH6.5.

About 20% sand grains are infiltrated into the humus soil, which is beneficial to root maintenance. The pot used in cultivation increases gradually with the growth of the plant, and the 3-inch pot is suitable for the cultivation of one-year-old seedlings.

Change 5-inch pots in the second year, and then change into larger flowerpots in the next 1-2 years, which can be carried out in spring and autumn.

3. Planting

The seedlings were planted in a pot filled with nutritious soil in early spring from February to May, and only one plant was planted in a flowerpot with a diameter of 25 centimeters.

If the seedling does not have a well-developed corm, it should be planted in the sandy soil first, and then the root system should be cultivated and then transplanted into the pot.

Because it is difficult to root directly into the planting basin installed above, if you do not have the conditions to find sand, you can also plant it directly into the basin, but it will take a little longer.

Those who sow bulbs generally germinate 20-25 days after sowing; soak the seeds in warm water for about 40 ℃ for about 24 hours, sow the seeds 0.5-1cm under the topsoil, put the seeds downward and belly-up, and cover them with plastic film or glass after pouring water so as to improve the ground temperature and promote seed germination. If the temperature is too low, the seeds are easy to rot, when the temperature is about 20 ℃, the seeds will germinate in about 60 days, and the seedlings will not blossom until 3-5 years.

4. Fertilization

Smiling gentleman orchid likes fertilizer, but too much fertilizer will cause rotten rot. in addition to applying base fertilizer, topdressing should adopt the method of "thin fertilizer and more fertilizer". Apply base fertilizer when changing pots.

Apply fermented solid fertilizer every other month in spring and autumn, and then apply liquid fertilizer once a week, it is best not to topdressing. When the whole plant can rely on the nutrients accumulated in spring and autumn to slowly grow and apply solid fertilizer, peel open the basin soil and bury it 2 cm deep. Do not directly touch the root system to avoid burns. When applying liquid fertilizer, the best way for seedlings to apply liquid fertilizer is as follows: water 1:40 is better, large and medium flowers are better at 1:20, fertilization time is appropriate in the early morning, avoid splashing on leaves, watering should be timely after applying liquid fertilizer, but water does not need to be too much, on the one hand, dissolve fertilizer, on the other hand, the newly grown fleshy root can be rinsed to prevent and injure the new root.

The types of fertilizers are different in different seasons. Phosphorus and potassium fertilizers, such as bone meal, are applied in winter and spring, and nitrogen fertilizers, such as bean cake water, are applied in autumn.

Extra-root topdressing is commonly used in summer, spraying foliar with 0.1% potassium dihydrogen phosphate or calcium superphosphate. Extra-root topdressing can be carried out all the year round.

5. Lighting

In the whole process of cultivation, try not to let the plant be exposed to direct sunlight and spend about four hours a day in scattered sunlight. Too much light will narrow the leaves.

Laughing gentleman orchid summer avoid high temperature and hot sun exposure, should be placed in the air humidity and shady environment, pay attention to ventilation.

The gentleman orchid is afraid of the cold in winter, so you should move it indoors and put it in a place with plenty of light. The room temperature is about 5 ℃ to survive the winter safely.

If there are conditions, it is best to keep the ambient temperature stable between 15 and 25 ℃.

6. Temperature

The suitable temperature of Cymbidium is 15-20 ℃. When the plant growth is higher than 25 ℃, the plant growth is poor, and the excessive growth of leaves often occurs, which affects the flower bud differentiation. At this time, attention should be paid to ventilation and cooling; when it is lower than 10 ℃, the growth is slow; when it is below 0 ℃, the plant will freeze to death.

Attention should be paid to cooling in summer, which can promote flower bud differentiation. The temperature difference between day and night is large, which is beneficial to the growth of Cymbidium, and the suitable range is 6-10 ℃.

The leaves grow obliquely and upward on both sides and are arranged in a fan shape. During maintenance, the light direction can be adjusted so that the extension direction of the leaf is parallel to the light direction, that is, the tip of the leaf on one side points to the light source, the room points to the window, and the flowerpot is rotated 180 degrees every other week, so that the tip of the leaf on the other side points to the window.

In this way, the growing leaves can be arranged neatly, the front looks like an open fan and the side looks like a line.

It is also possible to control the leaves with a lead wire bent frame after a year of seedling growth, and remove the lead wire frame a year later, so as to prevent the leaves from growing crooked. If there are individual leaves skewed in the future, you can use black paper paste a paper cover to cover it, 10-15 days can be naturally straightened.

7. Watering

Potted plants should not be watered too much, so as to be wet. Plum rainy season from May to June to prevent Rain Water from rushing and showering, so as to prevent the roots and leaves from getting sick and rotting.

Pay attention to spraying water to cool down during the summer high temperature period. Proper topdressing in autumn promotes leaf growth. Heating up and keeping the soil moist in winter is conducive to flowering.

Second, the disease control of Cymbidium.

The main diseases of Cymbidium are soft rot, anthracnose, leaf spot, white silk disease and so on.

1. Blight spot

The main damage to the leaves, the primary light reddish brown, oval stripe disease at the junction is obvious, the surrounding tissue turned yellow.

It was found that the diseased leaves were cut off in time; appropriate potassium fertilizer was applied to avoid excessive water accumulation on the leaves; and 1000 times of carbendazim wettable powder was sprayed at the initial stage of the disease.

2. Root rot (soft rot)

In the process of cultivation, the tools and substrates should be strictly disinfected, and the roots were irrigated with 400-600 μ g / L penicillin and streptomycin at the initial stage of the disease.

In severe cases, remove all the rotten parts, soak the rest in potassium permanganate solution for 1 hour, then rinse with clean water and replant.

3. Sunburn

All the leaves turn yellow, which is caused by long-time strong light in summer. Shade cultivation should be used, and the yellowed leaves can be cut off.

4. Anthrax

The disease mostly occurs in the rainy and humid season, and the disease spot is mainly at the edge of the middle and lower leaves. Moist brown spots appeared on the leaves at the initial stage of the disease, and then gradually. Gradually expand into an oval disease spot, and produce concentric ring lines on the disease spot, the disease spot is dry in the later stage, and there are many small black spots scattered on it.

Control methods, one is to remove dead branches in late autumn or early spring. The leaves were fallen and the diseased branches were cut off in time and burned together.

The second is to spray 65% Dysen zinc 600 times solution before the disease.

Third, rational fertilization and watering, pay attention to ventilation and light transmission.

Fourth, at the initial stage of the disease, spray 50% carbendazim diluted 500 kg 800 letters, or 50% Topu body fluid, or spray 75% chlorothalonil diluted 600 times 800 times.

5. "Arrow clip" disease

Cymbidium often occurs in the cultivation of the phenomenon that it can not pull out the scape and can not blossom after the bud is pregnant, which is called "arrow clip".

It has something to do with temperature and fertilizer. The main reason for the arrow trap is that the temperature is not suitable.

The florescence of Cymbidium is mostly from December to March, when the room temperature is less than 14 ℃, the temperature difference between day and night is very small, and the flowers grow slowly after extraction, which leads to the phenomenon of arrow entrapment.

The solution is: when the flowers and plants are exposed, the room temperature should be raised to more than 20 ℃ immediately, and the room temperature at night should be about 12 ℃, so that the temperature difference between day and night can be more than 18 ℃.

It can also be poured into the soil with 25 ℃ warm water to accelerate the arrow. When the room temperature is too low, plastic film can be used as a frame to cover the flowerpot and place it in the sun to increase the temperature to urge the arrow.

Improper management of fertilizer and water will also cause "arrow entrapment" phenomenon, so it is necessary to apply enough fertilizer before flowering to promote the growth of buds and plants with sufficient nutrients.

Flowers and plants need enough water to grow quickly, so keep the soil moist from outcrop to flowering and apply a small amount of liquid fertilizer.

6. Crustaceans

Can be used artificial control, with bamboo sticks, small sticks, small soft brushes, etc., gently brush off the insect body and soot, and then rinse with clean water. In the nymph stage, spray 40-100 times of the emulsion, spray.