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Plant growth generally goes through the seedling stage, growth period, flowering period, fruiting period and other processes.
There are several conditions that plants need to have for growth:
1. Light. The intensity of light has an effect on the growth of plants.
2. Moisture. Plants cannot grow and reproduce without water.
3. Temperature. The temperature directly affects the growth and dormancy of plants, and too high or too low can affect the death of some plants.
4. Nutrients. The abundance of nutrients can make the plant grow vigorously, on the contrary, the dwarf plant is weak.
5. Soil. The soil is also acid-alkaline, which fundamentally affects the growth of plants.
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The growth of plants generally goes through the process of seed germination, plant growth, flowering and fruiting, senescence and death.
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Generally, it goes through the process of seed germination, plant growth, flowering, fruiting and the death of the whole plant.
The growth process of plants begins with the germination of seeds, and the germination of seeds of any plant requires water, air and the right temperature. However, the seeds of different plants have different requirements for these three conditions at the time of germination. The amount of water required for the seeds of some cultivated plants to germinate is:
40% for rice, 45% for wheat, 107% for peas and 110% for soybeans.
In the growth process of plants, after germination, the radicle first extends into the soil to form the taproot, and then the hypocotyl elongates to push the cotyledons and germ out of the soil, and the cotyledons of this seedling are unearthed. Part of the main axis of the seedling under the cotyledons is elongated by the hypocotyle; The main axis between the cotyledons and the first true lobe is formed by the epicotyl. The cotyledons usually turn green when unearthed and can be photosynthesized temporarily.
Later, the germ develops to form above-ground stems and true leaves. When the nutrients in the cotyledons are depleted, they wilt and fall off.
The growth process of plants can be said to be basically formed when the seedlings are hardened, and the hardening period of the seedlings is from the beginning of the significant decline in the growth of the seedlings to the dormancy period of the seedlings. Growth characteristics of seedlings in the hardening stage: at this time, the seedlings grow slowly and finally stop growing.
The seedlings gradually materialize and form robust terminal buds, and the nutrients in the body enter the storage state. The prephase of the sclerotic phase. Diameter and root system continued to grow, with a growth peak each.
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The right light, the right temperature, the right water, and the air (CO2) are the natural conditions. In addition, there are various mineral nutrients needed for plant growth, that is, various fertilizers.
Proper water is given to the plants to maintain normal growth. Some plants are dry and bloom in a slightly dry environment, while others bloom due to rain, depending on the native environment of the plant. Giving water according to the habit adjustment of the plant is the key to planting.
Each plant has its own suitable temperature for growth, according to the different native environment of the plant, some like high temperatures, some tolerate low temperatures; Some flowers bloom in the cool season and some in the hot season; Some are dormant and fall asleep. Before planting flowers and plants, it is important to know the right temperature for them to grow.
Plants from the tropical rainforest like a humid environment very much, plants from the desert like a drier environment, different plant native environments, there are also differences in growth habits, but most plants like to grow in a more humid environment.
The more air is circulated, the better it is for plant growth. In a well-ventilated environment, plants can grow more smoothly and there are fewer pests and diseases. The leaves of plants photosynthesize during the day, absorbing carbon dioxide and releasing oxygen; It breathes at night, absorbs oxygen and releases carbon dioxide.
However, the roots of plants are respiring at all times, so the roots of plants need a lot of oxygen, and if the air circulation is insufficient, resulting in a lack of oxygen in the roots of plants, it will be harmful to the growth of plants.
Plant cultivation media that contain the right nutrients is beneficial to the growth of plants. Some plants originally grow in deserts or humid swamps, and these barren areas do not have much nutrients themselves, so if these plants are given too many nutrients.
On the contrary, it will hinder the growth of the plant, for example, if the cactus is supplied with too many nutrients, it will cause its stem to split, so the amount of nutrients depends on the native environment of the plant.
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Soil: moisture, mineral nutrients (inorganic salts).
Atmosphere: Suitable temperature, humidity, light, carbon dioxide.
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Soil is needed for water and nutrients.
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The four processes of plant growth that are usually seeded are seed germination, leaf extraction, flower bud extraction, and fruiting. If it is a plant without seeds, it can only be propagated by measures such as dividing and cuttings, so the process of letting them grow is dividing, seedling growth, flowering, and fruiting.
1. Germination. The process of germination of plants propagated by seeds: the embryo waits inside the seed (some plant embryos can wait for decades) until external conditions begin to break down the shell or seed coat of the seed.
Seeds need water and heat to germinate. Water helps the seeds to destroy the seed coat, which can be very hard in some cases.
Corn and morning glory seeds have a very tough seed coat that needs to be soaked in water before planting. As soon as the seed grows, it begins to absorb water, triggering the reproduction of cells and enzymes within the seed. When the encapsulated embryo is turbocharged during the metabolic process, the seed is primed to release the first structure (called free radicals), and usually within a few days, the seedling breaks from its seed coat and continues to grow down and up.
2. Taproot and root.
As the shoots and cotyledons grow upwards, the taproot and smaller root hairs will also begin to grow. In order for plants to continue to grow, there must be proper soil or water with proper nutrients. A plant can be grown in soil or water (aquaculture) as long as it is able to obtain the proper nutrients needed to grow.
3. Leaves and flowers.
Once the roots have anchored the seedlings, upward movement growth begins. The plant has a solid foundation, it is getting a certain amount of food and water, all of which will help in the establishment of the stem and the creation of adult leaves. As the cells multiply, the plant will continue to grow upwards and outwards and new leaves will appear.
Flowers in many plants will also appear, and as the plant grows, it will continue to need the right nutrients in the soil and water as well as sunlight or the right artificial light. Plants in good health will eventually reach full height and maturity, depending on their specific species.
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1. Germination stage: Plant seeds are sown in the soil to provide it with sufficient water, and the seeds will grow young shoots after a month.
2. Growth period: After entering the growth period, the plant begins to grow taproots, stems and leaves.
3. Hardening period: At this time, nitrogen fertilizer is provided for plants, which can promote their growth, let the seedlings grow and mature as soon as possible, and the branches gradually harden. ”
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1. Embryonic stage.
The first stage of plant growth is the germination stage, when the seeds are in the dormant stage, bury them in the soil, and after watering them, the seeds will gradually wake up, regain their activity, and then absorb enough water from the soil to expand, and finally burrow out of the soil to grow.
2. Growth period.
The second stage of plant growth is the growth phase. After the plant seedlings are drilled out of the soil, they will begin to grow taproots, stems, and leaves, and nitrogen fertilizer and farm fertilizer will be applied to them to increase the growth rate of the plant, and after a period of time, the number of leaves will increase, and the stems will become thicker.
3. Hardening period.
The third stage of plant growth is the hardening phase. At this time, the growth rate of plant seedlings gradually slows down and enters the dormant period, and all the nutrients absorbed by the roots will be stored in the stem, so that the stem will harden.
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