Write a poem about phenology after class, and talk about the relationship between phenology and seasons in the poem.

For example, "the peach blossoms outside the bamboo are three or two, and the ducks in the spring river are prophets." (Su Shi titled Hui Chong's Night Scene of the Spring River) In early spring, ducks first felt the spring water heating and played in the water.

"Frozen waterfowl live together in cold weather, and one hundred is a group play. When pedestrians can't stand it, they suddenly smell the ice ring in Qi Fei. " (Qin Guan's Return from Guangling) At the end of winter, water birds are dependent on each other, and there is the sound of ice, and birds fly in surprise. Ducks and birds are messengers of spring.

"It rains at home in Huangmei season, and frogs are everywhere in the grass pond." Three kinds of images in Zhao Shixiu's poem "A Heart on a Water Threshold" show the seasonal characteristics of plum blossom and Huang Shi in late spring and early summer.

Huang Chao wrote the title of chrysanthemum: "The west wind is rustling all over the courtyard, and the cold butterfly is hard to come." Chrysanthemums wither, butterflies wither, although there is no word "autumn", but the coolness of autumn is coming.