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Poplar is a typical representative of Populus in Salicaceae.
Morphological characteristics of Salicaceae:
Trees or shrubs.
simple leaves alternate with stipules.
the flowers are unisexual, and the flowers are in panicles.
each flower has a bract, no perianth and a disk or gland. Stamens 2, pistil 1, ovary 1 locular superior. Capsule, 2-4-valved, small seeds, many, long hair at the base.
Salicaceae's distinguishing features:
Woody, with alternate stipules on a single leaf, panicle, no perianth, disk or gland. Capsule with small seeds and long hair at the base
Respondent: zhangruntong-IV 27-3-6 15:37
Populus is the most common tree in northwest China, belonging to the grassroots. As long as there is loess, give it a little water and it will survive. Its temperament is very civilian. It can be used as firewood, furniture and so on. It is a beautiful scenery in northwest China
Respondents: Wing Fire-Grade II 27-3-6 18:5
1. Populus is a typical representative of Populus in Salicaceae.
morphological characteristics:
trees or shrubs.
simple leaves alternate with stipules.
the flowers are unisexual, and the flowers are in panicles.
each flower has a bract, no perianth and a disk or gland. Stamens 2, pistil 1, ovary 1 locular superior. Capsule, 2-4-valved, small seeds, many, long hair at the base.
Living environment:
Poplar is the most common tree in northwest China. Wherever there is grass, there is the shadow of poplar. Poplar is not very particular about living conditions. On the roadside, beside the ridge, wherever there is loess, there is her survival. She doesn't chase after rain or lust for sunshine. As long as she can give a little water to the hardened land, a branch of poplar will take root and sprout. Just move a little space for weeds to live, and she will decorate the yellow land and hold up a piece of green. She doesn't need to be fertilized or watered like a delicate lawn. As long as she doesn't use a knife and axe to cut it down and gives her a relaxed environment to absorb free air, she will stand tall and upright. She never says no to the land where she grows. She is not a vine, rooted in barren soil, happy-go-lucky, otherwise, because she belongs to the grassroots. Although poplar was born in poverty, it is the most concerned about the quality of life. There is still ice in the soil, and there is still a chill in the spring breeze. Her branches have sprouted green buds. Under heavy pressure, every bud and leaf of her is striving for progress, never bending down to beg, and there is no kitsch face. In the autumn wind, although the leaves have been stripped off, the thin branches are still full of essence, with their branches up and their heads held high. In the severe winter, facing the sword, she still stood in the cold yellow land, with proud branches, trees without words and trees with sounds. At this time, the noble flowers and plants, however, are in the greenhouse, receiving nutrients sent to the leaves and roots, lazily killing the days without blood.
Life habit:
The temperament of poplar is civilian, but it is the richest. She can be used as firewood, furniture, purlin and farm tools. Like the yellow land where she grew up, she is unpretentious. In the eyes of some people, she will almost forget her existence. But for the barren and poor yellow land, she is a brave man. Throughout the year, she stays behind and decorates, reducing the poverty and loneliness of the yellow land and increasing the vividness and beauty, because her roots have been connected with the yellow land as a whole. Poplar didn't think of transplanting and migration, even if her fallen branches and leaves were corrupted by soil, it would add some nutrients and vitality to this yellow land. Under the thick loess, the immortal life of poplar is surging, and the yellow land is crisp and green.
ii. Poplar:
The representative work of French painting master Paul Cézanne (1839-196). The representative figure of the later impressionist school, who pursued the form of expression all his life and made new creations in the use of color and modeling, was called "the father of modern painting". Cezanne opposes the separation of sketch and color in traditional painting concepts, and pursues the perspective of objects through color. His pictures are harmonious and beautiful in color.
in early April p>1879, Cezanne moved to Meilun, a small town located 3 kilometers southeast of Paris, not far from Fontainebleau. Every day, he takes his easel and paint and chooses the scenery for painting, and his special preference is a small village called Mansi nearby. What pissarro loves is rural farming and the daily life of rural residents; Cezanne, on the other hand, is completely different. His single-minded concern is the natural scenery that is not disturbed by people or animals. He chose the scenery not on the basis of its beauty, but from the perspective of lines, colors, light and space to see if it meets the standards of pure modeling. In the quiet countryside, he made some adjustments to the style he had formed since he became an adult, and used a long and oblique brushwork to draw a pattern similar to a carpet network on the screen. This network pattern in which light circulates is the main feature of his works such as Poplar painted in Pontoise the following year.
The scenery Cezanne painted in this painting is near Ma Gourville Castle in Patty village, not far from Pontoise; For more than ten years, he often came here to paint. After arriving at the roadside overlooking the scene, he began to construct the picture space, regardless of whether it had realistic effects. The path planted with poplars has an "S" curve, and he uses this lively curve to arrange different levels of its composition. The scene in the depth of the picture is therefore smaller than the scene in the front of the picture; However, unlike illusion or photography, the scenery he painted has no vague feeling and its color is no less. The mechanical effect of this geometric structure is alleviated by light and air passing through it, and the blank left by using light pigment between inclination and brush strokes makes this movement of light and air more obvious. The patterns drawn with uniform brushwork are very energetic, which makes the towering trees whose leaves are shaking in the wind show a sense of rhythm close to music.
When Cezanne painted his landscape paintings, the pigments used in his palette were very limited, that is, light green and Siena earth color were mixed, and in addition, they were used to represent the blue and white of the sky and the stone fence beside the well, and the latter two colors were painted on the center and right side of the picture. He drew slowly, sketching out the pattern directly with pigment, without drawing a sketch showing the outline of the picture first. The criss-crossing brushstrokes are in a perfect balance with each other, which makes the painted scenery give people a sense of stability, which is very close to the traditional concept of painters in the seventeenth century. He once wrote: "I want impressionist painting to become a solid art, which will last forever like the works of art collected in museums."
[ Prose]: That piece of poplar
Li Siping
When the north wind turned to the south wind and became soft and warm, the 2, poplar trees in Liyang High School campus became a particularly eye-catching landscape on the eastern Henan Plain.
In the hearts of many people in Minquan County, Henan Province, the poplar tree growing tall and straight on the sandy land is constantly showing a brand-new hope. In their hearts, the sound of books coming from that poplar in the morning seems to be the most beautiful voice in the world, and it is a melody full of spring, which makes them fall in love; At night, they often look at the four-story building in the poplar, and the bright lights in the classroom will relieve their fatigue after a day's work, inject warmth into their hearts, and bring comfort ... In the spring of 1999, Ding Chuantao, an old civil rights teacher who had been teaching in Beijing No.9 Middle School for more than 4 years, retired at home and spent his old age peacefully, could not stand the exhortation of the villagers and could not let go of his hometown education. When "Liyang High School" appeared in the eastern plain of Henan Province, they had a clearer goal and a stronger desire in their hearts: in this land where great philosopher Zhuang Zhou and writer Jiang Yan were raised and once owned "Liyang Academy", Liyang High School will strive to create conditions for those with poor family circumstances, provide help to those who are facing dropping out of school, and let them have the opportunity to study again and rebuild their confidence in life.
With the quiet birth of Liyang High School, rows of ordinary and tall poplars have been planted on campus, and simple and diligent high school students have also entered. Poplar trees have the possibility of sprouting new buds in the spring breeze because of the rooted land. As a result, they shed their own shade in the summer sunshine and sang passionate songs in the autumn breeze. On the campus of Liyang High School, which covers an area of 54 mu, every poplar tree has witnessed the daily changes here, recorded the progress of the students and felt many unspeakable friendships with its new life course.
Those old teachers who have retired from the podium give up the leisure of enjoying their old age and rekindle themselves here, igniting new hopes for their students and guiding them to a bright future; The care of people from Beijing's cultural circles not only makes those recipients feel at ease in their studies, but also makes more young people feel the warmth of being concerned and gain the motivation to devote themselves to their studies and strive for knowledge. It is in this way that there is no noisy impetuous spirit and aggressive fashion in the campus, and the students live a simple and tense life calmly. In every dawn, in the clear crow, they all walk out of the dormitory early, and in the wide playground and under the straight poplar trees, they carefully open every new and fulfilling day. The students' hard work and self-improvement deeply moved the teachers and made them more refreshed. Being in such a situation, teachers are not only gratified, but also have a new passion for life. The harmonious interaction between teaching and learning and the all-round communication between heart and heart have become the most moving bright colors in this simple and honest campus.
Time flies. Poplar trees planted on campus at first have already taken deep roots, with thick trunks and lush foliage, and new seedlings are also growing vigorously year by year. Similarly, the first batch of 135 students from Liyang High School have completed their studies. In the college entrance examination in 22, 133 students reached the admission line of universities, technical secondary schools and higher vocational schools, and some even entered key universities. Those peasant children who were originally faced with dropping out of school, just like the poplar trees on campus, have a land to take root and grow again, so that they can be nourished by knowledge and make continuous progress, thus having a broader world and changing their personal destiny.
Poplar trees on campus are swaying gently in the spring sunshine, and the new leaves on the branches are full of vitality. In the surge of spring tide, every poplar tree stands upright and upright, showing its own life landscape, and stretching out its calmness after winter.
Populus is the most common tree in northwest China and belongs to the grassroots. As long as there is loess, give it a little water and it will survive. Its temperament is very civilian. It can be used as firewood, furniture and so on. It is a beautiful scenery in northwest China. She doesn't need someone to fertilize it or water it like a delicate lawn. As long as she doesn't use a knife and axe to cut it down and gives her a relaxed environment to absorb free air, she will stand tall and upright. She never says no to the land where she grows. She is not a vine, rooted in barren soil, happy-go-lucky, otherwise, because she belongs to the grassroots. Although poplar was born in poverty, it is the most concerned about the quality of life.
it's very concise! ! ! !