【摘要】 利用甘肃省西峰、天水两地1971-2005年气温资料及西峰农业气象试验站、天水农业气象试验站1984-2005年苹果物候观测资料,分析研究表明,在全球气候变暖的背景下,甘肃黄土高原自1971年以来,年平均气温增加了0.9~1.8℃。受此影响,苹果叶芽开放、展叶、开花等成熟前的发育期提前了14d左右,叶变色、落叶等成熟后发育期后延了2~5d;≥30℃和≥35℃的高温日数20世纪90年代比80年代分别偏多5.8~7.7d/a和2.8d/a,致使苹果的坐果率及品质等有所下降。因此,在苹果生产中,应适当提高栽培地的海拔高度、培育新品种以适应气候的持续变暖。更多还原

【Abstract】 Based on the meteorological data of 1971-2005 and the phenological observation date of apple tree from 1984 to 2005 at the Agrometeorological Experimental Station of Xifen and Tianshui in Gansu Province,the impacts of climate warming on phonological period and growth of apple tree in Loess Plateau of Gansu Province were analyzed.The results indicated that annual average temperature increased by 0.9-1.8℃ in Loess Plateau of Gansu since 1971.The growing periods of the apple trees before the apple maturity,such as leaf bud open,leaf open and flowering advanced by about 14 days,while the growing periods of the apple trees after the apple maturity,such as the leaf color change and leaf fallen postponed by 2-5 days.The annual days of maximum temperature ≥30℃ and ≥35℃ in 1990’s were 5.8-7.7 and 2.8 days more than in 1980’s respectively.This led to the decrease of the fruit setting rate and quality of the fruit.The apple trees should be grown at the sites with higher altitude and the apple varieties should be improved in order to adapt to the climate warming.更多还原