The method of sowing and Propagation of Lantern Tree what if aphids grow

Lantern tree, this kind of plant is liked by many people, especially when it blossoms, it is really good-looking, what is the method of sowing and reproduction of this lantern tree? What if the lantern tree has aphids:

Methods of sowing and propagation of lantern trees:

1. Seed treatment

Lantern trees should be dried and shelled in time when the seeds are collected when the fruit is ripe in autumn. This is because the seed coat of the lantern tree is relatively hard, and the seed germination rate will be very low in spring sowing without treatment.

2. Shading at seedling stage

The time for shading the seedlings is determined by the local temperature and climatic conditions, which is used to protect the seedlings from sunburn. After entering autumn, it is necessary to slowly prolong the time and intensity of light, which can effectively improve the Lignification degree of seedlings.

3. Seedling management

When the seedlings grow to five to ten centimeters, the seedlings can be carried out. The requirements of the seedlings are small and large, dense and sparse, preferably on rainy days. At the same time, the missing plants should be treated with supplementary seedlings to ensure the uniform distribution of seedlings.

4. Budding seedling transplantation

When transplanting bud seedlings, the stubble should be cut off and the management of fertilizer and water should be strengthened at the same time. When transplanting, the main root and lateral root should be pruned properly to promote the germination of new root.

5. Fertilization management

Lantern tree seedlings should be fertilized frequently in combination with watering after their roots are unearthed. In the peak period of plant growth, nitrogen fertilizer should be applied to promote plant growth.

After entering autumn, stopping the application of nitrogen fertilizer and increasing the application amount of phosphorus and potassium fertilizer can improve the Lignification degree of the plant.

Farm organic fertilizer can be used as base fertilizer in winter, which can not only provide nutrients for seedlings, but also improve their cold resistance.

What if the lantern tree has aphids:

Cut off the insect-carrying twigs and wipe out the aphids that have not spread.

Natural enemies such as ladybugs and lacewings can be used to eliminate aphids, and aldicarb granules, dimethoate EC and aphid pine EC can also be sprayed to control aphids.

This is the end of the introduction on the methods of sowing and propagation of lantern trees and the treatment of aphids. Come and raise one as soon as possible.

Lantern tree Enkianthus chinensis Franch. Lantern tree picture: how to raise lantern tree / how to reproduce lantern tree business card lantern tree Enkianthus chinensis Franch. Introduction of Lantern Tree Culture methods and matters needing attention Lantern Tree is a deciduous shrub of Azaleaceae. Grows in the central part of our country. It is only 2-6 meters high. In summer, there are more than a dozen fleshy red bell-shaped flowers hanging on both sides of its branches, so they are also called bell flowers. The fruit of the lantern tree ripens in October, oval and brown. Interestingly, its stalks hang completely down, while the apex bends upward, so the fruit is upright. From afar, it seems that the branches are covered with small lanterns, hence the name. Lantern trees are not only beautiful flowers and fruits, but also their leaves turn thick red after autumn, unlike maple leaves, but better than maple leaves, so they are very promising ornamental trees in the garden. There is a kind of sparkling tree in Jinggangshan area of China, which is called "Lantern Tree" by locals. It is an evergreen broad-leaved tree with a lot of phosphorus in its leaves. Because lantern trees have a strong ability to absorb phosphorus from the soil, these phosphates are distributed on the leaves, giving off a small amount of phosphine gas. These gases have a low ignition point and can ignite spontaneously in the air, giving off a light blue flame-a cold light at a very low temperature. On a clear and windless night, these cold lights gather like street lamps in the mountains. Koelreuteria paniculata is a kind of tree with correct shape, dense and beautiful branches and leaves, red leaves in spring, yellow flowers in summer, yellow leaves in autumn, purple-red fruit and lanterns in form, so Koelreuteria is also called lantern tree. This species suggests that this species is a poisonous plant recorded in the Chinese plant atlas database, and its toxicity is that the mice died 16 hours after intraperitoneal injection of chloroform extract from flowers and leaves. Morphological characteristics of Lantern Tree deciduous shrubs or small trees, 3mur6 m tall, sparse to 10 m; young staff grayish green, glabrous, old branches dark gray; buds Terete, 8 mi mi long, bud scales broadly lanceolate, ca. 5 mm long, ca. 1.5 mm wide, reddish, apex apiculate, margin ciliate. Leaves often aggregated apically, papery, oblong to oblong-elliptic, 3Mel 4 (--5) m long, 2Mel 2.5 cm wide, apex obtuse, with short convex tip, base broadly cuneate or cuneate, margin obtusely serrate, both surfaces glabrous, midrib depressed on surface, together with lateral veins inconspicuous on surface, conspicuous on abaxial surface, quadruple veins obvious on abaxial surface. Petiole stout, 0. 8 m long, 1 (--15) mm, sulcate, glabrous. Flowers mostly composed of umbel racemes; flowers extremely slender, 2.5 cm long, glabrous; flowers pendulous; calyx 5-lobed, lobes triangular, ca. 2.5 mm long, ciliate; Corolla broadly campanulate, 1 cm long and 1 cm wide, fleshy red, mouth 5-lobed Stamens 10, inserted at base of Corolla, filaments 4.5 mm long, inflated below middle, puberulent, anthers 2-lobed, 1.5 mm long, awn ca. 1 mm; ovary globose, with 5 longitudinal lines, sparsely white short hairs, style ca. 5.5 mm, sparsely puberulent. Capsule ovoid, 6 Mel 9 (--8) mm in diam., loculicidally dehiscent into 5 valves, valves ca. 6 mm long, ca. 3.2 mm wide, with micro-longitudinal grooves in the middle. Seeds ca. 6 mm, slightly glossy, wrinkled, winged, with a large number of seeds per locule, planted on the upper part of the axis. Flowering in May and fruiting in June-October. The ecological habit of lantern tree Koelreuteria paniculata is a positive tree species, which is light-loving and slightly tolerant to semi-shade, cold-resistant (Huangshanzhu is poor), drought and barren, low humidity, saline-alkali soil and short-term waterlogging. Deep roots, strong roots, strong sprouting ability, medium growth rate, slow growth when young, and then gradually fast, wide adaptability, lax requirements for soil, can grow in both slightly acidic and alkaline soil, preferring to grow in calcareous soil. It has strong wind resistance, can resist minus 25 ℃ low temperature, and has strong resistance to dust, sulfur dioxide and ozone. There are few diseases and insect pests, and cultivation and management is easy. Lantern trees are distributed in Anhui, Zhejiang, Jiangxi, Fujian, Hubei, Hunan, Guangxi, Sichuan, Guizhou and Yunnan. Born in a sparse forest on a hillside of 3600 meters above sea level. The type specimens were collected from western Yunnan. Lantern tree is a deciduous shrub of the rhododendron family. Grows in the central part of our country. It is only 2-6 meters high. In summer, there are more than a dozen fleshy red bell-shaped flowers hanging on both sides of its branches, so they are also called bell flowers. The fruit of the lantern tree ripens in October, oval and brown. Interestingly, its stalks hang completely down, while the apex bends upward, so the fruit is upright. From afar, it seems that the branches are covered with small lanterns, hence the name. Lantern trees are not only beautiful flowers and fruits, but also their leaves turn thick red after autumn, unlike maple leaves, but better than maple leaves, so they are very promising ornamental trees in the garden. This species is widely distributed in this genus. The shape, size and indumentum of leaves, flowers and fruits vary greatly. This species is related to E. deflexus (Griff.) Schneid. Very similar, but the latter pedicels, petioles, leaves are often pilose, especially on the veins and axils on the back of the leaves are densely covered with flat coarse hairs, the leaves are often larger, the awn on the anther is as long as the anther, and the calyx is lanceolate and triangular, not difficult to distinguish. Cultivation management of lantern tree cultivation management of Koelreuteria paniculata is relatively simple, the main root and thick lateral root should be cut properly during transplanting, which can promote multiple fibrous roots and make it easy to survive. Reproduction: by sowing. Cultivation points: the cultivated soil is the most suitable for deep and moist soil. Like light, can withstand semi-overcast and cold. It has deep roots, strong ability to sprout, tolerance to drought and barren, short-term stagnant water, and strong resistance to smoke and dust. Seedling management (1) shading: the shading time and shading degree should be determined according to the local air temperature and climatic conditions at that time, in order to ensure that the seedlings are not damaged by sunburn. In autumn, it is necessary to gradually extend the light time and light intensity until the full light is received, so as to improve the Lignification degree of the seedlings. (2) Inter-seedling and supplementary seedling: when the seedling reaches the height of 5~10cm, it is necessary to keep about 12 seedlings per square meter when the seedlings are separated from 10~15cm and then watered and applied topdressing. The seedlings require that the seedlings should be kept big, inferior and good, dense and sparse, and the whole seedling should be equidistant and should be carried out on cloudy and rainy days. Combined with inter-seedlings, the missing plants were treated with supplementary seedlings to ensure the uniform distribution of seedlings. (3) Daily management: the soil should be loosened, weeded and watered frequently to keep the bed moist. After defoliation at the end of autumn, most of the seedlings can be as high as 2m and the ground diameter is about 2cm. The seedlings will be dug up and graded, and transplanted in the next spring, the roots will be slightly shorter before transplantation, and after the end of the transplantation, the stem of the seedlings will be cut off from the rhizome, that is, the stubble will be flat from the surface, and then watered thoroughly. Sprouts should be wiped frequently after germination, leaving only the strongest bud to become the trunk. During the growing period, the soil is often loosened, weeded, watered and fertilized, and a straight trunk can be formed in autumn. (4) Transplantation: transplanting bud seedlings can promote the root system of seedlings to develop, and the one-year-old seedlings are high 50~70cm. Koelreuteria is a deep-rooted tree species, which should be transplanted many times to form a good effective root system. The seeding seedlings can be dug up and planted in the ditch after falling leaves in the autumn of that year, and then planted separately in the next spring. As the trunk of Koelreuteria paniculata is not easy to grow straight, it is necessary to cut off the stubble and strengthen the management of fertilizer and water in the first transplant. In spring, branches sprout from the base, and those who are straight and strong are selected to be cultivated as the trunk, then the trunk grows fast and straight. If the first cut-off can not meet the requirements, it can be cut off again in the spring of the following year. In the future, it should be transplanted every 3 years or so, and the main root and thick lateral root should be cut properly to promote new root. The young trees of Koelreuteria paniculata grow slowly, and the first two transplants should be planted densely, which is beneficial to cultivate straight trunk and save land. After that, the canopy should be sparse and well cultivated. (5) fertilization: fertilization is an important measure to cultivate strong seedlings. After the seedlings are unearthed and grow roots, it should be combined with watering and fertilization frequently. In the peak period of annual growth, nitrogen-based quick-acting fertilizer should be applied to promote the vegetative growth of the plant. In autumn, it is necessary to stop the application of nitrogen fertilizer and increase the application of phosphorus and potassium fertilizer in order to improve the Lignification degree of plants and the cold resistance of seedlings. In winter, farm organic fertilizer should be used as base fertilizer, which not only provides persistent nutrients for seedling growth, but also plays the role of heat preservation and soil improvement. With the growth of seedlings, the amount of fertilizer should be gradually increased to meet the nutrient needs of seedling growth. The amount of topdressing fertilizer should be less in the first time, 2500g to 3000g nitrogen fertilizer per mu, and then applied every 15 days, the fertilizer amount can be slightly larger. In general, when the height of the trunk reaches the height of the branching point, the main branch is retained and can come out of the nursery for 3 to 4 years. If the one-year-old seedlings are not straight or can not reach the fixed drying standard, they will be recultivated after flat stubble in the following year. Generally, after twice transplantation and cultivation for 3 to 6 years, the diameter of breast height can reach 4~8cm. Planting density: about 600trees per mu of DBH 4~5cm, 200to300trees per mu of DBH 6~8cm, 3-5 main branches selected, short to 40cm, 2-3 lateral branches per main branch, crown-height ratio 1 ∶ 3. To cultivate full-crown seedlings with dry diameter 8~12cm, 160 ~ 170 seedlings were planted per mu, that is, the row spacing was 2m × 2m, and the seedlings with dry diameter above 12cm were planted with a row spacing of 2m × 2.5m per mu. Combined with tending management, the budding branches with a dry height of less than 1.5m were pruned to promote the straight growth of the trunk. Seedling shaping and pruning the crown of Koelreuteria paniculata is nearly spherical, the tree shape is correct, and the natural tree shape is generally adopted. Due to different uses, the plastic requirements are also different. The seedlings of street trees should have a straight trunk, the height of the first branch is 2.5 ~ 3.5m, the crown is complete and plump, and the branches are evenly distributed and developed. Shade trees require large and dense crowns, and the height of the first branch is lower than that of street trees. In the process of cultivation, corresponding pruning measures should be taken around the above requirements. It can be done in winter or at the time of transplantation. Maintenance management and pruning should be paid attention to: 1. Koelreuteria paniculata is generally cut off when planting, and the dry height is set at 2.5 m to 3.5 m according to the demand. In the winter of the same year, among the branches germinated above the branch point, 3 to 5 branches with strong growth and uniform distribution were selected as the main branches, and the rest were all thinned. two。 The retained branches were intercepted about 45 cm, and 6 to 9 buds were retained on the selected main branches in the second summer. the distribution direction of buds should be reasonable, non-crossed and uniformly distributed, thus forming lateral branches. 3. To be pruned in early winter, the lateral branches are cut short, with a length of about 50 cm. After pruning according to this method, the basic tree shape can be formed after 3 years, and then the dry and withered branches, disease and insect branches, inner bore branches, cross branches and long branches should be removed in time. Watering and fertilization Luan Shu likes the humid environment, except that it should be fully watered when planting, and then it should be irrigated once or twice in May, June, September, October and November, and the soil should be kept moist, and frozen water should be irrigated at the beginning of December. In the following year, the green water should be poured back in time at the beginning of March, and once in April, May, June, September, October and November. July and August are the periods of abundant precipitation. If the weather is not too dry, you can not water it, and you should also pour enough anti-freezing water at the beginning of December. The third year is irrigated according to the method of the second year. After the fourth year, you can pour enough green water and frozen water in early spring and early winter, and grow on natural precipitation if it is not too dry in the rest of the season. After the heavy rain in the summer rainy season, stagnant water should be removed in time to prevent the water from rotting. Lantern trees are mainly propagated by sowing and propagation, and tillers or roots can be inserted. When the fruits are ripe in autumn, they are harvested and dried and shelled in time. Because the seed coat is hard and impermeable, if it is not treated, spring sowing is often not germinated in the following year, so it can be sown in spring after wet sand stratification treatment in autumn. Ridge sowing is generally used with a monopoly distance of 60-70cm. Due to the low emergence rate of seeds, a large amount of seeds are used, with a sowing rate of 30-40kg/ mu. Disease control of lantern trees the disease mainly occurs in tree trunks and main branches, as well as on branches. In the early stage of the disease, the disease was slightly swollen, dark brown, and the surface was moist. After that, the disease was sunken and cracked, overflowing a yellowish translucent soft rubber block, and finally turned into an amber-like hard rubber block with a smooth and shiny surface. The growth of trees is weak, and when serious occurs, it can cause some branches to dry up. The disease can be caused by a variety of reasons, which can be roughly divided into physiological glue flow, such as frost injury, sunburn, wounds caused by mechanical injuries, wounds caused by insect pests, etc., as well as infectious glue flow, bacteria and fungi can cause glue flow, but the pathogenic bacteria are still unknown. Prevention and treatment measures: (1) scrape scar and apply medicine. Scrape the glue off the branches with a blade, then smear the wound with carding agent and potion. (2) strengthen management, pay attention to anti-cold and anti-freezing in winter, and you can apply white or carding agent. Pay attention to sunburn prevention in summer, timely prevention and control of branch diseases and insect pests, try to avoid mechanical damage. (3) spray stone-sulfur mixture once every 10 days before germination in early spring, twice in a row to kill overwintering bacteria. Spray chlorothalonil or carbendazim 800 to 1000 times during the onset period. The aphid of Koelreuteria paniculata, which belongs to Homoptera and Aphididae, is a major pest of Koelreuteria paniculata, which mainly harms the tender shoots, buds and leaves of Koelreuteria paniculata. In serious cases, the shoots are covered with insects, affecting the growth of branches, resulting in tree weakness and even death. Occurrence rule: several generations a year, spend the winter with eggs in bud cracks and bark cracks. When Koelreuteria paniculata first germinated in early April of the following year, the overwintering eggs hatched into nymphs, which mostly perched at the cracks of the buds, which was similar to the color of tree buds. The wingless female aphid formed in mid-April and began to give birth to small aphids; a large number of winged aphids appeared in late April, which migrated and spread, and the insect population increased greatly; from late April to May, the damage was the most serious, with tender shoots and leaves covered with worms, sucking nutrients from trees, bending the damaged branches, curling leaves, and spilling a lot of insect urine from branches, trunks and ground, which not only affected tree growth, but also affected environmental sanitation. After the middle of June, the number of insects decreased gradually, and in mid-late October, winged aphids moved back to Luanshu, and a large number of viviparous aphids, after a period of damage, produced winged viviparous male aphids and wingless viviparous females, and laid eggs after mating for the winter. Lantern tree picture lantern tree

Lantern trees are deciduous shrubs or small trees, 3 Mel 6 m tall, sparse to 10 m; young staff gray-green, glabrous, old branches dark gray; buds Terete, 8 Mel 10 mm long, bud scales broadly lanceolate, ca. 5 mm long, 1.5 mm wide, reddish, apex with small protuberance, margin ciliate. Leaves often aggregated apically, papery, oblong to oblong-elliptic, 3Mel 4 (--5) m long, 2Mel 2.5 cm wide, apex obtuse, with short convex tip, base broadly cuneate or cuneate, margin obtusely serrate, both surfaces glabrous, midrib depressed on surface, together with lateral veins inconspicuous on surface, conspicuous on abaxial surface, quadruple veins obvious on abaxial surface. Petiole stout, 0. 8 m long, 1 (--15) mm, sulcate, glabrous. Flowers mostly composed of umbel racemes; flowers extremely slender, 2.5 cm long, glabrous; flowers pendulous; calyx 5-lobed, lobes triangular, ca. 2.5 mm long, ciliate; Corolla broadly campanulate, 1 cm long and 1 cm wide, fleshy red, mouth 5-lobed Stamens 10, inserted at base of Corolla, filaments 4.5 mm long, inflated below middle, puberulent, anthers 2-lobed, 1.5 mm long, awn ca. 1 mm; ovary globose, with 5 longitudinal lines, sparsely white short hairs, style ca. 5.5 mm, sparsely puberulent. Capsule ovoid, 6 Mel 9 (--8) mm in diam., loculicidally dehiscent into 5 valves, valves ca. 6 mm long, ca. 3.2 mm wide, with micro-longitudinal grooves in the middle. Seeds ca. 6 mm, slightly glossy, wrinkled, winged, with a large number of seeds per locule, planted on the upper part of the axis. Flowering in May and fruiting in June-October.

Culture method of Lantern Tree

Mode of reproduction

To sow and propagate mainly, tillers or roots can also be inserted, harvested when the fruit is ripe in autumn, and dried and shelled in time. Because the seed coat is hard and impermeable, if it is not treated, spring sowing is often not germinated in the following year, so it can be sown in spring after wet sand stratification treatment in autumn. Ridge sowing is generally used with a monopoly distance of 60-70cm. Due to the low emergence rate of seeds, a large amount of seeds are used, with a sowing rate of 30-40kg/ mu.

Cultivation and management

The cultivation and management of Lantern Tree is relatively simple, and the main root and thick lateral root should be cut properly when transplanting, which can promote multiple fibrous roots and make it easy to survive.

Reproduction: by sowing.

Cultivation points: the cultivated soil is the most suitable for deep and moist soil. Like light, can withstand semi-overcast and cold. It has deep roots, strong ability to sprout, tolerance to drought and barren, short-term stagnant water, and strong resistance to smoke and dust.

Seedling stage management

(1) shading: the time and degree of shading should depend on the local air temperature and climatic conditions at that time, so as to ensure that the seedlings are not harmed by sunburn. In autumn, it is necessary to gradually extend the light time and light intensity until the full light is received, so as to improve the Lignification degree of the seedlings.

(2) Inter-seedling and supplementary seedling: when the seedling reaches the height of 5~10cm, it is necessary to keep about 12 seedlings per square meter when the seedlings are separated from 10~15cm and then watered and applied topdressing. The seedlings require that the seedlings should be kept big, inferior and good, dense and sparse, and the whole seedling should be equidistant and should be carried out on cloudy and rainy days. Combined with inter-seedlings, the missing plants were treated with supplementary seedlings to ensure the uniform distribution of seedlings. (3) Daily management: the soil should be loosened, weeded and watered frequently to keep the bed moist. After defoliation at the end of autumn, most of the seedlings can be as high as 2m and the ground diameter is about 2cm. The seedlings will be dug up and graded, and transplanted in the next spring, the roots will be slightly shorter before transplantation, and after the end of the transplantation, the stem of the seedlings will be cut off from the rhizome, that is, the stubble will be flat from the surface, and then watered thoroughly. Sprouts should be wiped frequently after germination, leaving only the strongest bud to become the trunk. During the growing period, the soil is often loosened, weeded, watered and fertilized, and a straight trunk can be formed in autumn.

(4) Transplantation: transplanting bud seedlings can promote the root system of seedlings to develop, and the one-year-old seedlings are high 50~70cm. Lantern tree is a deep-rooted tree species, which should be transplanted many times to form a good effective root system. The seeding seedlings can be dug up and planted in the ditch after falling leaves in the autumn of that year, and then planted separately in the next spring.

As the trunk of the lantern tree is not easy to grow straight, it is necessary to cut off the stubble and strengthen the management of fertilizer and water in the first transplant. In spring, branches sprout from the base, and those who are straight and strong are selected to be cultivated as the trunk, then the trunk grows fast and straight. If the first cut-off can not meet the requirements, it can be cut off again in the spring of the following year. In the future, it should be transplanted every 3 years or so, and the main root and thick lateral root should be cut properly to promote new root. Lantern tree seedlings grow slowly, the first two transplants should be properly close planting, which is conducive to the cultivation of straight trunk and save land. After that, the canopy should be sparse and well cultivated.

(5) fertilization: fertilization is an important measure to cultivate strong seedlings. After the seedlings are unearthed and grow roots, it should be combined with watering and fertilization frequently. In the peak period of annual growth, nitrogen-based quick-acting fertilizer should be applied to promote the vegetative growth of the plant. In autumn, it is necessary to stop the application of nitrogen fertilizer and increase the application of phosphorus and potassium fertilizer in order to improve the Lignification degree of plants and the cold resistance of seedlings. In winter, farm organic fertilizer should be used as base fertilizer, which not only provides persistent nutrients for seedling growth, but also plays the role of heat preservation and soil improvement. With the growth of seedlings, the amount of fertilizer should be gradually increased to meet the nutrient needs of seedling growth. The amount of topdressing fertilizer should be less in the first time, 2500g to 3000g nitrogen fertilizer per mu, and then applied every 15 days, the fertilizer amount can be slightly larger.

In general, when the height of the trunk reaches the height of the branching point, the main branch is retained and can come out of the nursery for 3 to 4 years. If the one-year-old seedlings are not straight or can not reach the fixed drying standard, they will be recultivated after flat stubble in the following year. Generally, after twice transplantation and cultivation for 3 to 6 years, the diameter of breast height can reach 4~8cm.

Planting density: about 600trees per mu of DBH 4~5cm, 200to300trees per mu of DBH 6~8cm, 3-5 main branches selected, short to 40cm, 2-3 lateral branches per main branch, crown-height ratio 1 ∶ 3.

To cultivate full-crown seedlings with dry diameter 8~12cm, 160 ~ 170 seedlings were planted per mu, that is, the row spacing was 2m × 2m, and the seedlings with dry diameter above 12cm were planted with a row spacing of 2m × 2.5m per mu. Combined with tending management, the budding branches with a dry height of less than 1.5m were pruned to promote the straight growth of the trunk.

Seedling shaping and pruning lantern tree crown is nearly spherical, the tree shape is correct, generally using the natural tree shape. Due to different uses, the plastic requirements are also different. The seedlings of street trees should have a straight trunk, the height of the first branch is 2.5 ~ 3.5m, the crown is complete and plump, and the branches are evenly distributed and developed. Shade trees require large and dense crowns, and the height of the first branch is lower than that of street trees. In the process of cultivation, corresponding pruning measures should be taken around the above requirements. It can be done in winter or at the time of transplantation.

Control of Diseases and insect pests of Lantern Tree

General situation of insect pests

Lantern tree gum disease mainly occurs in tree trunks and main branches, but also on branches. In the early stage of the disease, the disease was slightly swollen, dark brown, and the surface was moist. After that, the disease was sunken and cracked, overflowing a yellowish translucent soft rubber block, and finally turned into an amber-like hard rubber block with a smooth and shiny surface. The growth of trees is weak, and when serious occurs, it can cause some branches to dry up.

The disease can be caused by a variety of reasons, can be roughly divided into physiological glue, such as frost injury, sunburn, wounds caused by mechanical injuries, wounds caused by insect pests, etc.; there are infectious glue, bacteria, fungi can cause glue, pathogenic bacteria are not clear.

Lantern tree aphid belongs to Homoptera and Aphididae, which is one of the main pests of lantern trees. it mainly harms the tender shoots, buds and leaves of lantern trees. in serious cases, the twigs are covered with insects, affecting the growth of branches, resulting in tree weakness and even death. Occurrence rule: several generations a year, spend the winter with eggs in bud cracks and bark cracks. When the lantern tree first germinated in early April of the following year, the overwintering eggs hatched into nymph aphids, which mostly perched at the cracks of the buds, which were similar to the color of tree buds. The wingless female aphid formed in mid-April and began to give birth to small aphids; a large number of winged aphids appeared in late April, which migrated and spread, and the insect population increased greatly; from late April to May, the damage was the most serious, with tender shoots and leaves covered with worms, sucking nutrients from trees, bending the damaged branches, curling leaves, and spilling a lot of insect urine from branches, trunks and ground, which not only affected tree growth, but also affected environmental sanitation. After the middle of June, the number of insects decreased gradually, and the winged aphids moved back to the lantern tree in mid-late October, and a large number of viviparous aphids, after a period of damage, produced winged viviparous male aphids and wingless fetal females, and laid eggs after mating for the winter.

Prevention and cure measures

(1) scrape scars and apply medicine. Scrape the glue off the branches with a blade, then smear the wound with carding agent and potion.

(2) strengthen management, pay attention to anti-cold and anti-freezing in winter, and you can apply white or carding agent. Pay attention to sunburn prevention in summer, timely prevention and control of branch diseases and insect pests, try to avoid mechanical damage.

(3) spray stone-sulfur mixture once every 10 days before germination in early spring, twice in a row to kill overwintering bacteria. Spray chlorothalonil or carbendazim 800 to 1000 times during the onset period.