2. cicada flower
Cicada 1. Why doesn't cicada have stamens?
Cicada is an evergreen shrub of Apocynaceae and Cicada. Its plants grow vertically, with a height of about 2 meters, and potted plants are generally controlled at about 1 meter. 3 ~ 5 impellers, with elliptic or oblate leaves, 5cm ~ 12cm long and 0/.5 cm ~ 4 cm wide, pubescent. Cymes, golden yellow flowers, orange-red stripes in throat, wide funnel-shaped corolla, 5 lobes, overlapping left and right, swollen corolla base with 5 stamens. Capsule is spherical with long spines.
Cicada is native to the southern United States and Brazil. It likes warm, humid and sunny environment and is not cold-resistant. During the vigorous growth period from May to August, the decomposed dilute liquid fertilizer or compound fertilizer should be applied once every 65,438+00 days. Pay attention to the nitrogen content in the fertilizer should not be too high, so as to avoid the excessive growth of branches and leaves and the scarcity of flowers. In addition, the lack of light in the cultivation environment will also cause this phenomenon, so try to give enough sunshine.
You can fully water the plants during the growing period and spray water on the plants when the air is dry, otherwise the leaves will wrinkle because the air is too dry. After flowering, the plants should be pruned properly to promote branching, control the height of plants and keep the appearance of plants beautiful. In winter, move indoors to the sunny place, control watering, and it is safe to overwinter above 5℃. Prune the plant once a year in spring, and cut off long branches, cross branches and other branches that affect the plant shape. Change pots every 1 to 2 years in spring. Potted soil should be loose, fertile and rich in humus, and can be planted with a mixture of 3 parts humus soil, 2 parts garden soil and 1 part sand soil.
Cicadas usually breed in spring and summer. Cuttings are made of strong branches in sandy soil or vermiculite, and then placed in a semi-cool place with moist air. The soil should not be too dry, it is easy to take root.
Cicada has dense plants, green leaves and bright flowers, which are very eye-catching. Suitable for large and medium-sized potted plants to decorate large indoor spaces such as living rooms, balconies, parks, shopping malls and venues? The effect is very good.
Second, the cicada culture technology
Cicada can be used not only to watch flowers, but also to watch leaves, which is suitable for garden planting or potted plants. It has the characteristics of anti-barren and anti-pollution. It is suitable as a greening plant in the factory mining area. Because it is toxic, it is not suitable for family cultivation.
Huang Chan likes high temperature, humidity and plenty of sunshine. Suitable for fertile and well-drained soil. There are two cultivated varieties: cicada with hard branches and cicada with soft branches. Plants are poisonous, so be careful. This species is a poisonous plant included in China Botanical Atlas Database, and its toxicity is that the milk of this plant is poisonous. Poisoning of humans and animals is characterized by rapid heartbeat and disorder of circulatory system and respiratory system. Pregnant animals will miscarry if they eat it.
Cuttage propagation of cicada can be carried out at 20℃. After the cuttings take root, put cicadas in pots, 3 plants in each pot, pick buds in time, and cultivate short and fat plant shapes. Cicadas can be planted in the ground when they are young, and the branches can be cultivated in time. When the number of branches reaches 5-6, the pot can be moved. Pruning and shaping, cultivating dwarf plant shape. In the growing season, the soil should be kept moist and fertilized every 20 days to promote its flourishing. Control water during hibernation.
The problem of cicada flower cicada flower
Famous flowers on Singapore coins.
1965 self-issued coins, the main currency 1 Singapore dollar (US$) is equal to 100 cents (cents), and the name of the coin is English Singapore. The par value is 1, 5, 10, 20,50 cents, 1 yuan.
After 1985, the denomination was marked in English, Chinese, Malay and Tamil. The front of the coin has the national emblem of liger Xingyue, and the back is a unique local flower pattern.
1 min copper-clad steel. Front view: designed as the national emblem image, liger coat of arms, with the inscription of the year number below, and the country names in Malay, Chinese, Tamil and English on the outer circle; Reverse: The pattern is "1" with one coin on the left and one coin on the right.
Jin Zhuo Bandai Orchid is the national flower of Singapore. It symbolizes Excellence and brilliance, and is immortal from generation to generation.
Jin Zhuo Vandylan is also known as Hu Jihua. Orchids are transliterated from Fujian Minnan dialect.
It's Effie Jin Zhuo, a Spanish gardener who lives in Singapore. She cultivated an excellent new variety of Hu Jihua in her garden. 198 1 Singapore Ministry of Culture declared it as the national flower.
It has the following beautiful features. Beautiful and dignified appearance, superior, but also shows modesty, symbolizing the temperament of the Singaporean people.
It has a charming lip and five respectable lips. Full lips symbolize the equality of four ethnic groups in Singapore and four languages: Malay, English, Chinese and Tamil. The love column in the middle of the flower, androgynous, symbolizes the root of happiness.
Flowers are supported by the opposite lobes below, symbolizing harmony, sharing weal and woe, and sharing weal and woe. There is a bag-shaped corner behind the lip of the flower, which contains sweet juice, symbolizing the place where wealth gathers.
Uncover the pollen cover on the love column, and there are two flower blocks inside, like two "golden eyes", symbolizing foresight. Its stem climbs upward, symbolizing upward development and prosperity.
Its flowers have withered and bloomed again, symbolizing the lifeblood of Singapore, with a long history and full of endless confidence and hope. Singaporeans love orchids, and they prefer Jin Zhuo Vandylan, because they can compete for beauty even in the worst conditions.
It symbolizes the hard work and brave struggle of this nation. Orchid is a famous traditional garden flower in China.
It does not fade all the year round, its beauty is quiet, and its color is exquisite. Every time a flower blooms, it is full of fragrance and is a treasure worthy of appreciation.
According to "Guangqun Fangpu", when bees pick flowers, they put pollen between their thighs, fly back to the hive for storage and feed ordinary young bees. Only the pollen of orchids is arched back to the hive and provided to the queen bee.
Probably bees also know that orchids are noble. There are many anecdotes about orchids, and there are countless poems praising orchids, so I won't repeat them here.
5 cents aluminum bronze. Front view: designed as the national emblem image, liger coat of arms, with the inscription of the year number below, and the country names in Malay, Chinese, Tamil and English on the outer circle; Reverse: the face value of the pattern is "5", the face value of the outer ring is in English, and there is a floral decoration in the middle. The name of this flower is Dazhuhuang.
Bambusa of Araceae. Also known as Penglai banana.
Grass is woody, with many aerial roots extending to the ground. The young leaves are heart-shaped, and then many small holes or pinnate cracks gradually appear. The petiole is 30-50 cm long, sheathed, with a heart-shaped outline, many branches, dark green, oblong and oval, and then falls off. Spikes are short, nearly cylindrical, sessile, multi-flowered, bisexual and fragrant. When the fruit is ripe, it is purple. More than 40 species belong to the same genus.
Originally from Mexico. I can't find the ancient poet's poem praising the tortoise-backed bamboo, but I saw that Xu Yi's poem praising Acorus gramineus in Song Dynasty was written for appreciation, because it belongs to Araceae.
A green life is surrounded by water and stones, and there is the spirit of thin wind and drizzle. I am afraid that my predecessor is a generation, and I am afraid of a trace of dust on the earth.
10 cent copper coin. Front view: designed as the national emblem image, liger coat of arms, with the inscription of the year number below, and the country names in Malay, Chinese, Tamil and English on the outer circle; Negative picture: the pattern is "10" face value, the outer ring is English face value, and the middle and lower part is floral jewelry.
The name of the flower is Luo Shihua. Some books also say that it is a mosaic of the star jasmine tree.
Complex stone, Apocynaceae, complex stone. Also known as jasmine, evergreen vine, diameter 10 meter.
When broken, the flesh is milky white, the stems have adventitious roots, the branches are tender, the stems are hairy, the opposite petioles are short, ovoid or ovoid, 2- 10 cm long, with grass and hairs on the back. Cymes have small white flowers, butterflies are 5 lobes high, overlapping like windmills turning to the left, with strong fragrance, calyx 5 deeply split and rolled back, and stamens 5 are born. Wang Shimao, the younger brother of Wang Shizhen, the leader of the "last seven sons", was quite famous in the literary world after the middle of Ming Dynasty.
Specially select Wang Shimao's "Three Oleander Poems" to see how the ancients praised famous flowers. Oleanolic acid Shimao asks who is lonely, and Zhai Qing is isolated from the world.
When you suddenly leave a fragrant tree, you should know your sense of elegance and height. The cloth leaves are thin and suspicious of bamboo, and the flowers are tender like peaches.
Savages can't get enough of it. They often do this to villages. The poet wrote from the loneliness of home, "Lonely people ask each other, and Zhai Qing is isolated from the world."
Without consultants, it seems isolated. The first and second sentences pave the way for the following, the third and fourth sentences are gifts from friends to oleander, the fifth and sixth sentences are the appearance of oleander, and finally I wrote to watch oleander with the villagers.
"Savage" is from Shan Ye, and "village mash" refers to the turbid wine brewed by farmers. Imagine, after a day's work, the grandfathers, grandmothers, boys and girls in front of the village came to oleander with great interest, pointing, gesticulating, touching and smelling, talking and laughing, and handing a cup of "village mash" to the poet. Everyone drank a harmonious scene. Why not ask the poet to appreciate it?
Flowers have become the poet's "spiritual pillar" because they are friends, interesting and happy. Twenty cents of copper.
Front view: designed as the national emblem image, liger coat of arms, with the inscription of the year number below, and the country names in Malay, Chinese, Tamil and English on the outer circle; Negative picture: the pattern is "10" face value, the outer ring is English face value, and the middle and lower part is floral jewelry. The name of the flower is pompom flower, or pompom flower.
Some books also say it's a puff mosaic. Fifty cents of copper.
Front view: designed as the national emblem image, liger coat of arms, with the inscription of the year number below, and the country names in Malay, Chinese, Tamil and English on the outer circle; .
What is the reason why cicada leaves turn yellow?
First, drought and yellow
Water-deficient yellow is different from water-deficient yellow. Water-deficient yellow withered or dried up at the tip or edge of leaves. Old leaves withered and fell off from bottom to top, but new leaves grew normally. Pay attention to watering your feet, and water them thoroughly.
Second, lack of fertilizer and yellowing
It shows that the color of young leaves turns pale, yellow or light green, and the old leaves turn normal or gradually from green to yellow. Check the soil in the basin frequently. If it does, it's time to change it. Usually, thin fertilizer should be applied frequently, and some alum water should be poured to supplement iron.
Third, the lack of light yellow.
If the leaves are left in the shade for a long time and there is not enough sunlight to form chlorophyll, the whole leaves will turn yellow and then fall off. Supplementing light can avoid this disease.
Fourth, fat yellow
The yellowing of flowers caused by excessive fertilization or high concentration is characterized by dry brown top of new leaves, generally thick, dull, uneven, brown old leaves and falling off. Fertilization should be stopped immediately, and some fertilizers should be washed carefully with a lot of cleaning.
V. Burning yellow
Strong sunlight shines directly on some shade-loving flowers (such as chlorophytum and Hosta). ), it is easy to cause the tip and edge of the flower to wither, and yellow spots appear in the sunrise part of the leaf. Move to the shade.
Six, water yellow
The young leaves are dark yellow and dull, the old leaves have no obvious change, the branches are small yellow-green, and the new buds don't contract long, indicating that there is too much watering. Take the flowers out of the pot and put them in a ventilated and cool place, and then put them back into the pot after the soil has dried itself.
How to grow cicadas? How to grow cicadas?
Introduction to Huang Chan, Huang Chan (scientific name: Ahriman Da). ): evergreen shrub, the plant grows upright, about 2 meters high, and potted plants are generally controlled at about 1 meter.
3 ~ 5 impellers, with elliptic or oblate leaves, 5cm ~ 12cm long and 0/.5 cm ~ 4 cm wide, pubescent. Cymes, golden yellow flowers, orange-red stripes in throat, wide funnel-shaped corolla, 5 lobes, overlapping left and right, swollen corolla base with 5 stamens.
Capsule is spherical with long spines. Flowering period may-June.
Native to the southern United States and Brazil, distributed in tropical America, introduced to China. Used for landscaping, with dense plants, green leaves and bright flowers, it is very eye-catching. It is suitable for large and medium-sized potted plants to decorate large indoor spaces such as living rooms, balconies, parks, shopping malls and venues, and the effect is very good.
Morphological characteristics of cicada Cicada is an erect shrub, 1-2 meters high, with milk; The branches are gray. 3-5 leaves of Cicadellidae are whorled, entire, ovoid or obovate-oblong, 6- 12 cm long and 2-4 cm wide, with an acuminate or acute apex, wedge-shaped base, dark green leaf surface, light green back and no hair except midvein and lateral vein on the back; Veins are flat on the leaf surface and convex on the back of the leaf, with 7- 12 lateral veins on each side, and netting will be carried out before reaching the edge; The petiole is very short, and there are glands between the base and the axils.
Cicada is a terminal cyme; Total pedicels and pedicels are bran-like puberulent; The flowers are orange-yellow, 4-6 cm long and about 4 cm in mouth diameter; Bracts lanceolate, inserted at the base of pedicel; The calyx is deeply 5-lobed, the lobes are lanceolate, and there are a few glands at the inner base: the corolla is funnel-shaped, with reddish-brown stripes on the inner surface, the lower part of the corolla is cylindrical, with a length of less than 2 cm and a diameter of 2-4 mm, the base is enlarged, and the flower throat expands upward into a crown brim, with a length of about 3 cm and a diameter of about 65438 0.5 cm. The crown brim is 5-lobed, and the corolla lobes are covered to the left, and the lobes are oval or round, with stamens. Disk fleshy entire, around the base of ovary; The ovary is entire, 1 room, the style is filiform, the top of the stigma is obtuse, and the base is annular. Cicada blooms from May to August.
The capsule of fruit cicada is spherical and spiny, with a diameter of about 3 cm; The seeds are flat and membranous, about 2 cm long and 65438 0.5 cm wide. The fruit period of cicada is10-65438+February.
Cicada's ecological habits Cicada likes high temperature, humidity, plenty of sunshine and a little tolerance to semi-shade. Suitable for fertile and well-drained soil.
Not cold-resistant, avoid frost, in case of long-term low temperature of 5-6℃, branches and leaves suffer. Huang Chan likes fertile and moist sandy loam, and the clay grows poorly, so it is necessary to avoid stagnant water and saline-alkali land.
It is more resistant to moisture and drought, and the soil should always be moist. The optimum growth temperature is 18-30℃, and it can grow normally above 35℃. The optimum temperature for dormancy in winter is 12- 15℃, which should not be lower than 10℃, and plants below 5℃ will be frozen.
The cultivation technology of cicada is potted in peat soil or humus soil, which is warm, and the lowest temperature in winter should be above 65438 05℃; Strong positive plants can be cultivated in outdoor sunlight in summer and in direct sunlight indoors in winter. I like humid environment.
Keep the basin soil full of water from spring to autumn, and reduce watering appropriately in winter to keep the basin soil moist. In the growing season of water and fertilizer, the soil should be kept moist and fertilized every 20 days to promote its flourishing.
Control water during hibernation. After frostbite, plants generally don't need to be fertilized, so watering should be moderate, so it is necessary to control the water, because it is difficult for plants in recovery period to absorb nutrients, and too much watering will lead to root rot.
Love fertilizer, when planting, apply decomposed cake fertilizer or garbage as base fertilizer, and apply compound fertilizer 1 time before flowering in spring and full flowering in summer respectively, which can promote more flowering and prolong flowering time. When planting cicada seedlings, you can plant them in the ground first, pick the heart in time and cultivate the branches. When the number of branches reaches 5-6, they are moved to the basin, and the root system is developed. Potted plants should be changed every year or every other year 1 time.
Nursery seedlings can leave the nursery and bloom for viewing in the next year. Pruning and shaping, cultivating dwarf plant shape.
Pruning in late winter and early spring. Timely intertillage weeding and pest control.
Pruning branches is uneven. The pruning intensity is 65,438+0 times in winter and spring every year, so that a plurality of lateral branches form a cluster crown or a long trailing branch is tied into a ball shape, which can control the overgrowth of branches, promote multi-flowers and beautiful appearance. Branches are prone to aging. When they are 5-6 years old, all the old branches can be cut off for germination, regeneration or replanting.
The branches and leaves of some plants will not fall off after withering, and the normal photosynthesis, transpiration and respiration of plants will be affected. Therefore, it is necessary to cut off the withered branches and leaves, so that the remaining branches and leaves can better absorb nutrients, which is also conducive to the re-germination of plants and avoid disease infection. After pruning, 2-year-old cicada seedlings can germinate many branches, form a full crown, bloom more, and enter the peak of viewing.
The breeding method of cicada is sowing and breeding. Cicada bears fruit after flowering, the germinated fruit has soft thorns and the seeds have wings. It is not suitable for long-term storage, but should be sown with the harvest, and the annual seedlings can leave the garden at/kloc-0. The layering propagation layering is carried out in the rainy season. The branches near the surface are cut and pressed into the soil, and take root in about 2 months, and can be separated from the mother plant.
Cutting propagation is particularly easy to take root and can be carried out all year round. Cut branches 30-40 cm long, split 4-6 cm at the lower end with a knife, and insert them into a water cup. The temperature is suitable in spring and autumn, and roots can grow in about 2-3 weeks. Because of the high temperature in summer, the water is easy to deteriorate, so it is necessary to change the water every two days.
Cutting seedlings are often used in production. From late March to mid-April, after the temperature rises steadily, the branches of 6 months to 2 years old are cut as cuttings, densely inserted into wet sand or gravel beds, and sprayed with water. When the temperature is above 20℃, the roots can grow in about 20 days, and can be moved to nursery or planted in pots in about 40 days.
Prevention and treatment of cicada diseases The crown appearance of the damaged plants with symptoms of coal smoke disease is partly or mostly black, and some branches are also black. The surface of the affected part is covered with black mold, which is sticky when touched by hand. In the later stage, the black-and-white mottled leaves can partially fall off, and the photosynthesis of seriously damaged plants is blocked, the growth is bad, the leaves fall early and the ornamental value is reduced.
Pathogen: Ascomycetes, including Capnodium spp. and Neococcidia. Wait. Its asexual stage is mostly the spread of tobacco mold.
The common occurrence law in Guangdong is the asexual stage of bacteria. The pathogen is epiphytic mycelium at the diseased site.
What is the reason why cicada leaves turn yellow?
A, drought and water shortage of yellow and water shortage of yellow is not the same. Water-deficient yellow withered or dried up at the tip or edge of leaves, and the old leaves withered and fell off from bottom to top, but the new leaves grew normally.
Pay attention to watering your feet, and water them thoroughly. Second, the lack of fertilizer yellow shows that the color of young leaves turns pale, yellow or light green, and the old leaves turn normal or gradually from green to yellow.
Check the soil in the basin frequently. If it does, it's time to change it. Usually, thin fertilizer should be applied frequently, and some alum water should be poured to supplement iron. Third, the leaves are placed in a cool environment for a long time, and there is not enough sunlight to form chlorophyll. The whole leaves turn yellow and then fall off. Supplementing light can avoid this disease.
4. The yellowing of flowers caused by excessive fertilization or high fertilizer concentration is dry brown at the top of new leaves. Generally, the leaves are thick and dull, the protrusions are not stretched, and the old leaves fall off in brown. Fertilization should be stopped immediately, and some fertilizers should be washed carefully with a lot of cleaning.
5. Direct the strong yellow sunlight to some shade-loving flowers (such as chlorophytum and Hosta). ), it is easy to cause the tip of the leaf and the edge of the leaf to wither, and yellow spots appear in the sunrise part of the leaf. Move to the shade.
6. The young leaves are dark yellow and dull, the old leaves have no obvious changes, the branches are small yellow-green, and the new buds are not long, indicating that there is too much watering. Take the flowers out of the pot and put them in a ventilated and cool place, and then put them back into the pot after the soil has dried itself.