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What school are you from? For example, our school Nanjing Forestry University has two-ball plane tree, horsetail wood, tulipwood, white magnolia, broad magnolia, two-bridge magnolia, chicken paw maple, triangular maple, rose, Japanese early cherry, purple-leaved plum, hollow lotus grass, white axle grass, horseshoe gold, road yellow, purple-leaved barberry, bird's tongue boxwood, large-leaved boxwood, sprinkling golden peach leaf coral, hydrangea, horse chestnut, sorrel, ginkgo, metasequoia (school tree), bone structure, poplar, octagonal golden plate, lycoris, umbrella house cassia soapberry, red leaf heather, stepgrass and so on, etc.
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Pine pine is the common name of pine plants, at present, in addition to the cultivated pine plants such as Japanese five-needle pine, Scots pine, etc., most of them are born in the mountains at higher altitudes, generally more than 600 meters, such as Huangshan pine: 750-1800, Huashan pine 1000-3000, Dabie Mountain five-needle pine: 700-1350 and so on.
Generally speaking, pine plants are more suitable for slightly acidic soils, and their tolerance to barrenness, drought and cold allows them to grow in harsh environments such as alpine rocks. But barrenness, drought and cold are not necessary conditions for the growth of pine plants, and all plants want to grow in a good environment, but the competition in a good environment is too fierce. The necessary conditions for the survival environment of pine plants should be a certain altitude and slightly acidic soil in the mountains.
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Our planet has been around for billions of years, and we humans have more than 6 billion of us on this planet.
At the same time, you can also find that the distribution of our human beings is not very balanced, some areas are few and some areas are more, and there is a migration, for example, many young people have moved from the countryside to the city, because the city has more resources.
And not only human beings, but also among animals, there is such a migration, for example, our common wild geese fly south, that is, from a cold area to a warm area, such a migration is to adapt to their own survival.
In the process of spreading their own seeds, animal propagation plants are more common, that is, they are like the Xanthris in our lives.
The fungus is covered with thorns, which can easily stick to the animal's fur, and then it can accompany the animal as it walks, and then fall to other places, and eventually take root and sprout.
In fact, there is a very common phenomenon in our lives, that is, some fruits that we often eat, such as apples and oranges, this is actually a way to use animals to spread, after all, we like to eat apples, and then we help the apples to pick them, and finally after eating, the discarded pits will actually grow an apple tree again.
The use of wind to spread the use of wind is also a common way in life, such as the dandelion we are familiar with, and some like fishing, their seeds are very light, when the seeds are dry, the wind will blow to other places, and finally take root and sprout.
The use of water to spread like the coconut we are familiar with is actually the use of water to spread, because on the surface of the leaf, it has a thick shell, in fact, this shell is to protect him from the invasion of seawater and destroy its embryonic structure in the process of using water to spread.
Another very peculiar way to propagate is catapult propagation, a bit like the Pea Shooter we see in Plants vs. Zombies. And some of the beans that are common in our lives, such as mung beans and soybeans, their pods will make a sound like a pop after drying, and then the seeds will eject.
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Plants have many advantages over animals, for example, plants are more loyal to the earth than animals, and when they stand firm, they generally stop moving. But what if the environment changes? For example, the heat is unbearable, the weather is cold, the flood is drought, the cattle and sheep are grazing, and so on.
Naturally, there is a way. For example, desert plants are so drought-resistant that cacti even turn their leaves into hard thorns to reduce water evaporation and protect themselves from animal nibbling. For example, many plants secrete chemicals to defend against animal aggression.
For example, plants will come up with various ways to spread seeds, some seeds have wings and can fly, like winged gourds, turnips, etc.; Some will eject, like impatiens, wisteria, etc.; Some have evolved hooks and will hitchhike, like Xanthus, ghost needle grass and the like, ......More than 400,000 plant species occupy almost every region of the planet, and they have adapted to a wide range of climates, from the equator to the North and South poles. These plants all understand a basic truth, if you can't change the environment, you must change yourself, and there is no second way to go.
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1. Light, plants all need light, don't think that shade-loving plants don't need light, but the wavelength of light needed is different.
2. Temperature, the temperature will affect the flower bud differentiation of plants.
3. Water, plants of different origins have different requirements for water. The water demand for each stage of the growth and development of the sedan ant is also different.
4. Air, such as carbon dioxide, oxygen. Carbon dioxide is the main raw material for photosynthesis, and oxygen is necessary for plant respiration.
5. All kinds of mineral elements, such as nitrogen, phosphorus and potassium trace elements. The soil contains some mineral elements, but the content is different. This is where the role of fertilizer comes in.
In fact, many soilless cultures, which seem to be just some water, actually contain nutrients necessary for plants.
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The conditions required for plant survival are:
Suitable light, suitable temperature, water, and air, especially carbon dioxide in the nuclear body, these are natural conditions, which can produce photosynthesis, in addition, there are various nutrients needed for plant growth, such as rich in nitrogen, phosphorus, potassium and other rich compound fertilizers, to provide nutrients for various life activities of the plant Zheng eggplant.
The answers are as follows; 1. Light.
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