| Dwarf cultivation is the direction of apple cultivation in China.The studying of dwarf rootstock suitable in shaanxi, selecting well division index, is of great significance to apple dwarf rootstock application.Based on the meteorological data(from 1985 to 2014)of representative 58 counties(districts) in Shaanxi province, the statistics of each period average temperature, extreme temperature, precipitation, evaporation capacity, etc were studied, the dwarf cultivition is appraised by scoring different index assignment. According,the inspected results conform to expert evaluation and research and raise the application area of apple dwarf proposal in shaanxi(draft), The main results obtained as following:1. The index of apple dwarf rootstocks zoning in ShaanxiTemperature indicators: mean annual temperaturesã€â‰¥10℃accumulated temperatureã€â‰¥10℃daysã€January average temperatureã€January the max. DIFã€January the lowest soil temperatureã€January the average surface temperatureã€extreme maximum temperatureã€extreme minimum temperature;Moisture indicators: annual precipitationã€April precipitationã€May precipitation 〠June precipitation 〠annuual difference between precipitation and evaporationã€April difference between precipitation and evaporation.2. The cultivation area of Shaanxi apple dwarf suitabilityOptimal quality region(≥80): Yijun, Yintai, Baoji, Longxian, Fengxian, Qianyang,Qishan, Fengxiang, Meixian, Binxian, Changwu, Chunhua, Wugong, Yangling, Xingping,Yongshou, Huaxian;Suitable region(79.5~70):Huanglong, Huangling, Luochuan, Ganquan, Baota, Ansai,Yichuan, Fuxian, Yaozhou, Fufeng, Qianxian, Xunyi, Liquan, Sanyuan, Jingyang, Qindu,Hancheng, Fuping, Dengcheng, Baishui, Linwei, Huayin, Gaoling, Lintong;Sub-suitable region(69.5 ~ 60):Wubu, Qingjian, Zichang, Wuqi, Zhidan, Yanchuan,Dali, Pucheng, Heyang;Unsuitable region(<60):Suide, Zizhou, Jiaxian, Jingbian, Mizhi, Hengshan,Dingbian,Taibai. |