Perhaps my master was worried that my wooden shoes trampled his precious moss and tapped Chai Men lightly, but no one opened it for a long time.
Spring can't close the garden, and an apricot will go out of the wall.
"Apricot blossoms out of the wall" is a kind of sexual exercise, which can make the stems and leaves of plants in the most suitable position for using light energy and is conducive to receiving enough sunlight for photosynthesis. The reason for sexual exercise is that there is a hormone called auxin in plants, which can promote the elongation and growth of plant cells. Under the irradiation of single-sided light, the distribution of auxin on the backlight side is much more than that on the light side, so that the cells on the backlight side extend longitudinally faster than those on the light side, which makes the stem bend to the slow-growing side.
Song. Su Lin: Interrogation
Close to the water tower, the moon comes first, and flowers and trees are easy to turn to spring.
In the process of plant growth and development, a certain amount of heat must be absorbed from the environment to complete a certain stage of development, and the total heat required for each stage of plant development is a constant. It is expressed by the formula: k = n (t-T0), where k is the effective accumulated temperature (constant), n is the development duration, that is, the time required for growth and development, t is the average temperature during development, and T0 is the initial temperature of biological development (biological zero). The reciprocal of the development time n is the development rate. During the development period, sunny flowers and trees will develop earlier because of sunlight, and the temperature T is higher than that of similar shade plants.
Tang Bai Juyi's Peach Blossom in Dalin Temple
In the world of April, the flowers have withered, and the peach blossoms in the ancient temples have just bloomed.
I hate that spring has nowhere to go, so I don't know to ask it for help.
This is also a problem of effective accumulated temperature. Because of the high terrain, the temperature in mountainous areas is generally lower than that in plains, so it takes a long time for plants in mountainous areas to reach the effective accumulated temperature, and their development is slow.
Qing Palace Treasures Ji Hai Miscellaneous Poems
The vast sadness of parting extends to the setting sun, away from Beijing, riding a whip to the east, feeling that people are on earth.
I quit my job and go home, just like a flower falling from a branch, but this is not a heartless thing. It can be turned into the soil of spring and can also play a role in nurturing the next generation.
In the ecosystem, chemical elements such as C, H, O, N, P, S, which make up organisms, are constantly circulating. After the fallen flowers are decomposed by microorganisms, some mineral elements return to the inorganic environment and can be absorbed and reused by plants.
Reply: Ancient poetry with biological knowledge.
You don't have to hurry back when you meet, and Huang Die will be sad tomorrow "(stone" The Nine Days of the Kings ")
Many plants have obvious seasonality and belong to the photoperiod phenomenon of plants. Yellow flowers, or chrysanthemums, are short-lived plants that bloom in autumn. Chrysanthemum is an insect-borne flower that spreads pollen through insects.
"If you plant flowers with your heart, you won't grow flowers, but you don't plan to plant willows to shade them" (Zengsheng)
In the process of transplanting, some plants are hard to survive because their roots are destroyed, their water absorption capacity is greatly weakened, and transpiration loses a lot of water. But some plants, such as willow, have strong reproductive ability and can reproduce asexually with stems.
"Flowers wither, red apricots are small, Yan returns, and people are surrounded by green water" (Shi "Gone")
Angiosperms generally bloom first and then bear fruit. When the flowers wither and remain red, the fruit just begins to develop and belongs to sexual reproduction.
"Crazy catkins dance with the wind, and fine peach blossoms chase the water" (Tang Du Fu's "Wandering")
There are many ways to spread seeds. The seeds of willow and other plants are very light and spread by the wind.
"When planting beans in Shannan, the grass is full of beans and the seedlings are sparse" (Returning to the Garden by Tao Yuanming in the Eastern Jin Dynasty)
In farmland ecosystem, there is interspecific competition between weeds and crops. Generally speaking, crops cannot compete with weeds. If people neglect management, there will be a scene of "lush vegetation" and "sparse bean seedlings".