Evaluation standard of climate quality of crisp pears in plateau and hills of Shanxi Province.

In order to set up a climate quality-evaluating approach and grading standard for crisp pears in hills and plateau of Shanxi province, this study was based on field experiment, making use of the quality test data of crisp pears, phenological observation data, meteorological observation data, and historical climate data from 7 major large-scale producing areas of crisp pears from 2018 and 2019 in Shanxi province. The study of the relation between meteorological conditions in different growth periods and fruit quality of crisp pears has been studied by methods such as correlation analysis, multiple regression, principal component analysis, and weighted summation. The results showed that the key meteorological factors which could significantly influenced the fruit qualities were: precipitation at maturity stage, duration of sunshine at fruit expansion stage, diurnal temperature range at maturity stage, mean temperature at evaluation stage. These could be settled as meteorological index of climate quality of crisp...