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During the spring growth of poplar trees, new seedlings and leaves will grow on the branches, and the amount of water and nutrients consumed by the plants will increase. During the summer growth process, the plant has more branches, the trunk is straight, and the leaves grow luxuriantly and brightly. During autumn growth, oval-shaped dark brown fruits grow and the leaves turn yellow.
During winter growth, the leaves begin to wither, and the trunk is rough and grayish-brown in color.
During the growth of poplars in spring, new seedlings and leaves will grow on the thick, healthy branches, which can not only represent the arrival of spring, but also tell people that the poplar tree has ended its long dormancy period and its vitality is beginning to flourish, and fertilizer and watering should be applied at this time to ensure the normal growth of the poplar.
In the growth process of poplar in summer, the phenomenon of cell differentiation is faster, and the side branches of the main trunk grow more, at this time, the trunk is straight and straight, and the leaves are dense and green, showing the vitality of nature. During the period of vigorous growth, it is necessary to prune the branches that are too dense and too long, and apply nitrogen and phosphorus fertilizer every 15 days.
During the growth of poplars in autumn, the fruit is ripe, oval in shape, ovoid in shape, dark brown in color, and the color of the leaves will gradually change from green to yellow. At this time, the temperature is low, and the watering should be kept as close to the outdoor temperature as possible, and the phosphorus and potassium compound fertilizer and potassium dihydrogen phosphate solution should be applied.
During the growth of poplars in winter, the growth rate of the plant begins to slow down, and slowly enters the hibernation period, when the leaves of the plant begin to wither and fall, the epidermis of the trunk becomes rough, with the peeling shape of scales, the color changes from brownish-gray to grayish-brown, and the number and quantity of poplar watering need to be reduced.
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It was a tree that fought upstream, with straight stems and straight branches. Its stem is usually a zhang high, as if it has been artificial, within one zhang, there are no side branches. All its branches are all upward, and close together, as if artificially added, into a bunch, and never slant out.
Its broad leaves are also patchy upward, barely oblique, let alone inverted; Its skin is smooth and has a silvery halo with a slight tinge of tean. This is a tree that has maintained its stubbornness despite the oppression of the wind and snow in the north. Even if it is only as thick as a bowl, it strives to develop upward, as high as two zhang, towering to the sky, indomitable, against the northwest wind.
This is the poplar tree, an ordinary tree in the Northwest Pole, but it is by no means an ordinary tree!
It has no whirling posture, no bending and circling branches, maybe you want to say that it is not beautiful, if beauty refers specifically to "whirling" or "side-slanting" and the like, then the poplar tree is not a good woman in the tree; But it is majestic, upright, simple, serious, and not lacking in gentleness, not to mention its strength and uprightness, it is a great husband in the tree! When you walk across a plateau where the snow is beginning to melt and see such a poplar tree or a row of poplar trees standing proudly on the flat earth, do you just think that it is just a tree? Don't you think that it is simple, serious, strong and unyielding, and at least symbolizes the peasants of the north?
Do you not even think that in the vast land behind enemy lines, there are strong and unyielding sentinels who stand proudly like this poplar tree to guard their homeland? Don't you go a little further and think that such a poplar tree, whose branches and leaves are close to each other and strives for progress, seems to symbolize the spirit and will of today's North China Plain to write the history of New China with blood?
Excerpt from "In Praise of the Poplars".
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When poplars grow in the spring, new shoots and leaves have just grown on the branches, which are tan in color and have a smooth surface. When it grows in summer, it grows more branches, and the leaves grow luxuriantly and full, and the color is emerald green. As they grow in autumn, the leaves turn from green to yellow and begin to wither away.
When growing in winter, the leaves fall off completely, and the branches turn grayish-brown with a rough surface.
When poplars grow in spring, the plant will grow new shoots and leaves, the plant has just woken up from the dormant period, and its own growth state is more active, at this time, it needs to replenish the appropriate amount of water and nutrients, and apply a small amount of decomposed and fermented organic fertilizer on the soil surface, or thin cake fertilizer water, to speed up the growth of Bohui plants.
When poplar grows in summer, the plant grows more branches, the leaves are dense and full, the color is emerald green, the tree shape is straight and straight, and the crown is naturally fan-shaped.
When poplar grows in autumn, the leaves will slowly turn from green to yellow, due to the decrease in temperature, the sun exposure is not enough, the content of lutein and carotene in the leaves is higher, the process of its own metabolism is ongoing, and the plant will have the phenomenon of falling leaves, which can reduce the unnecessary loss of plant nutrient base.
When poplars grow in winter, the leaves of the plant will fall off completely, the color of the branches will change from tan to gray-brown, and the surface is rough, but the trunk still grows naturally, and the branches will wither, droop, overlap, and bifurcate.
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