The world in April is full of beauty,
Peach blossoms in the mountain temple are in full bloom.
Peach blossom in Dalinsi
It is said that the temperature decreases with the elevation. Every kilometer added is about 6 degrees Celsius. The elevation of Dalin Temple in Lushan Mountain is between1100 ~1200m, which is about 6℃ lower than that of "Ren" (the flat land in Jiujiang City, with an average elevation of 32m). Therefore, the flowering time of peach blossoms is 20 ~ 30 days later, so the phenology on the mountain is about one month later than that on the mountain.
[2]:
When Bai Juyi 16 years old, he wrote a well-known poem "Farewell to Ancient Grass": "The vast grass crosses the plain and comes and goes with the four seasons. 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. Oh, my friend's prince, you left again, and I heard them sigh behind you. " This poem vividly reveals the annual changes of phenology.
[3]:
Ouyang Xiu's poem "Birds Cry" said: "When the mountains are poor, the sun shines, and everything struggles with the seasons. Tomorrow, the flowers are deep and the leaves are dark, and the weather is warm and birds are singing. " In a few words, a picture of flowers and birds in Yangchun jumped to the paper.
[4]:
Lu You, a great poet in the Southern Song Dynasty, also left many poems reflecting phenological changes. He said in the poem "Early Winter": "Life poems drain light, and I love early winter frost."
He said in "Writing on the Pillow": "It is Spring Festival, not winter, to lie down and listen to the curtains with hundreds of tongues."
In "Night Return", I wrote: "I went to Jiangxiang at the beginning of this year, and I saw geese in the Mid-Autumn Festival at the end of the year. The 80-year-old man is as stubborn as iron, and the storm in the middle of the night will bring him back. "
Most of these poems were written by the poet when he was in his hometown of Shaoxing, Zhejiang in his later years, which reflected his constant concern for the vivid scene of nature.
Lu You not only carefully observed phenology, but also used birds to predict agricultural time. The poem "Birds Singing" says: "Savages have no calendar day, and birds sing at four o'clock. Listen to the rules in February, and spring ploughing is not too late. Three smells of oriole, young woman sympathizes with silkworm hunger. April calls for cuckoos, and there are silkworm clusters at home. In May, Uncle Ya rang, and the young plants were worried. Some people say that farmers suffer, but it rains on sunny days. If you are happy, you will know, and the government will not know. "
There is another cloud in the song of birds: "cuckoo cuckoo, the sky is not clear, and the plow has been plowed." The cuckoo's cry seems to urge people to hurry up with spring ploughing, so as not to delay the farming season.