To study the climate suitability of pomegranate planting, make full use of climate resources, and find suitable areas for pomegranate cultivation in Xianyang, based on the latest meteorological observed data of 12 stations in Xianyang from 1988 to 2017, GIS technology was used to carry out climatic suitability regionalization of Xianyang pomegranate cultivation, aiming to provide a basis for pomegranate production and agricultural structure adjustment. There were 8 indices of climatic division for pomegranate, namely, ≥10℃ active accumulate temperature from bud emergence to fruit maturity, ≥10℃ active accumulate temperature during the annual growth period, sunshine hours of the year, sunshine hours on September, precipitation from July to September, the average temperature difference between day and night at 18-21℃, extreme minimum temperature of the year, extreme minimum temperature of ten days. The results showed that: the quality area of pomegranate cultivation accounted for 14.9%, mainly distributed in Sanyuan, most of Jingyang, northwest of Weicheng District, eastern Liquan, and northern Qianxian; the suitable area accounted for 21.3%, distributed in Xingping City, Qindu District, Weicheng District, the southern part of Liquan County, the southern part of Qianxian County and the Taiyuan District of Wugong north; the inferior area accounted for 16.6%, and the unsuitable area accounted for 47.2%. Except Wugong, the south of Xianyang dry belt is a suitable area for pomegranate planting, the light, heat and water climate resources in this area meet all the meteorological factors needed for high-quality production of pomegranate, and the cultivation of pomegranate can be developed in this region vigorously.
agricultural geography
