Which solar term reflects phenology?

Those natural phenomena that are influenced by the environment (climate, hydrology, soil) and have annual cycles are all phenological phenomena.

It includes three aspects: first, the germination, leaf spreading, flowering, leaf discoloration and defoliation of various plants; Second, the first song, the last song, leaving, hibernation, etc. of migratory birds, insects and other animals. ; Third, some hydrometeorological phenomena, such as first frost, last frost, freezing, melting, first snow, last snow and so on.

Such as: 1, horrified, indicating insects, hibernating animals, etc. Waking up means that spring has come. 2. Xiaoman means that the seeds of summer crops are full, but they are not yet mature. 3, awn seeds mean the maturity of crops.