Abstract:

Based on data of peach’s phonological observation from 2003 to 2010 and meteorological data from 1971 to 2010 in the Agrometeorological Experimental Station of Tianshui, the model for assessing the climate suitability had been set up and the variation characteristics of climate and their influence on growth of peach had been studied. The results showed that the annual mean temperature had increased with linearity and precipitation varied with periodicity. The synthesize climate suitability degree was 0.59, temperature suitability degree was 0.73 and water suitability degree was 0.47. It indicated that the temperature suitability degree increased and water suitability degree decreased in sprout and flowering period in recent years. There was significant minus correlation between temperature and water suitability degree in this growth period. The water and temperature suitability degree was on a declining curve in fruit expansion and maturation period. It showed that the condition of peach growth became worse in the later period. The temperature suitability degree was above the water suitability degree. We suggested that facility for supplying water in key growth stage of peach should be considered when we plan to build orchard.