Beautiful in April, singing in May.
Harvest in August and fall in October.
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Peel dates in August and get rice in October.
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First frost in September, washing the floor in October.
Things can be seen falling apart all year round. In spring, flowers are overflowing, plants grow, thunder and thunder are dormant, and thunder should be timely. In winter, plants and trees will fall and insects will hibernate. Any living thing must adapt to the external environment, such as temperature, light, food, soil, water and other conditions, without exception. Song Dynasty poet Ouyang Xiu's poem "Birds Singing";
When into the badlands is waiting for the sun to shine, everything seems to be competing with the seasons.
Tomorrow, the flowers will be deep and the leaves will be dark, and birds will sing when the sun is warm.
When the sun is warm, all kinds of creatures compete with time and all the birds sing. Flowers and birds are living things, and they are very sensitive to seasonal changes. Their growth and development directly reflect the changes of natural seasons.
/kloc-at the age of 0/6, Bai Juyi, a poet in the Tang Dynasty, wrote a well-known poem "Farewell to Ancient Grass":
The long grass is so lush that the withered grass will thicken the color of the grass every autumn and winter.
Wildfire never completely devoured them, and the spring breeze blew again.
Weeds and wild flowers are all over the ancient road, and the end of the grass in the sun is your journey.
I once again sent my bosom friend, and the thick grass represented my deep affection.
The first two sentences of this poem reveal two important laws in phenology: first, the rise and fall of plants have annual cycle changes; Second, this cyclical change is driven by climate. Spring has come and everything is revived.
Su Shi's Night Scene by Huichong River in Song Dynasty: "Peach blossoms outside the bamboo are three liang, and warm ducks on the river are prophets." From the splashing of ducks in the water, we can feel the warmth of the river water, and also reveal that flowers and trees are all sunny and leafy, but their backs are weak, all birds are warm and cold, and their phenology is related to the climate.
Huang Zongxi, a scholar at the end of the Ming Dynasty, said: "The poet extracts the pure air of heaven and earth, and takes the moon, dew, wind, clouds and flowers and birds as his temperament, and his scenery and meaning are inseparable. ..... Ordinary people sing about the moon, dew, wind, clouds, flowers and birds. This is not their nature. They like painting too much to kiss. " The difference between poets and ordinary people lies in whether they can extract the pure air of heaven and earth and know the temperament of flowers and birds. China's outstanding poets in ancient times, on the one hand, cared about the sufferings of people's livelihood, on the other hand, loved nature, and were good at understanding the hints of birds and flowers. Many poems by Lu You, a great poet in the Southern Song Dynasty, reflect his careful observation of the changes of things. In his poem Early Winter, he said:
Life poems drain light, I love early winter frost.
On the pillow:
It's spring, not winter.
Return at night:
The cold current reached Jiangxiang early this year. At the end of the year and the Mid-Autumn Festival,
An 80-year-old man was as stubborn as iron and went home at midnight.
Most of these poems were written by the poet when he was in his hometown in Shaoxing, Zhejiang Province in his later years, which reflected his late years. Whether in spring or early winter or in the middle of the night, he was constantly observing phenology. He not only pays attention to phenology, but also uses birds to predict farming time. Lu You's Poems in Birds Singing;
Savages have no calendar days, and birds crow at four o'clock;
Listen to the rules in February, and spring ploughing is not too late;
Three smells of orioles, young women hungry silkworms;
Rhododendron April, silkworm soil cluster;
In May, Uncle Ya rang, and the young plants were worried.
Some people say that farmers suffer, but they look at sunny days and rainy days.
Happy people know nothing about the government.
Lu you in "birds" and cloud:
Cuckoo Cuckoo, before dawn, plow the field.
The cuckoo's crisp sound seems to urge people to hurry up spring ploughing so as not to miss the farming season.
Du Fu went to Sichuan in his later years to study the distribution of cuckoos. He said in the poem:
There are azaleas in Xichuan but not in Dongchuan.
There are no azaleas in Fuwan, but there are azaleas in Yun 'an.
I have been to Jincheng to build a house by the water.
There are more than one hectare of bamboo, and trees are in the sky.
At the end of spring, the cuckoo came and mourned.