When does the pear ripen? When does the pear ripen?

1.9 Pear ripens in September-10. In the process of fruit growth and development, the early stage is mainly cell division and tissue differentiation, and the later stage is cell expansion and pulp maturity. The fruit volume growth curve is S-shaped. The growth of pear root system has two growth peaks every year: the first growth peak is when the new shoots stop growing; The second peak appeared in September -65438+ 10. Under suitable conditions, pear roots can grow all year round without dormancy.

2. Because pear trees are widely distributed, their phenological periods are quite different. As far as flowering period is concerned, pear trees in Huili, Sichuan generally bloom in the first half of February, and flowers in Yanbian, Jilin are white in mid-May. Yali pear bloomed in Changsha, Hunan Province in early March and in Beizhen, Liaoning Province in early May, with a difference of nearly two months.

3. Pear trees cultivated in the same area have different phenological periods due to different species and varieties. From germination to flowering, Qiuzi pear was the earliest, Pak Lei pear was a little later, Shali pear was later than Pak Lei, and Xiyang pear was the latest, with a variation range of about 10 day.