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苹果是世界上落叶果树中最重要的果树,在世界上温带地区广泛栽培,近些年来发展迅速,许多国家都在不断扩大苹果的栽培面积,提高苹果的产量与质量。据联合国粮农组织统计,1969—1971年间世界苹果平均年产量为2827.6万吨,1979—1981年间平均年产量增至3572.5万吨,增长率为26.3％。 在农业生产上,品种是重要的生产资料,产量的高低、品质的好坏,在很大程度上决定于品种的本身。一个优良品种,在经
Apples are the most important fruit trees among the deciduous fruit trees in the world. They are widely cultivated in the temperate regions of the world and have been rapidly developed in recent years. Many countries are constantly expanding the cultivated area of apples and increasing the output and quality of apples. According to the UN Food and Agriculture Organization statistics, the average annual global apple production in the period 1969-1971 was 28.276 million tons. The average annual output in 1979-1981 increased to 35.725 million tons with a growth rate of 26.3%. In agricultural production, the variety is an important means of production, the level of output, quality is good or bad, largely determined by the variety itself. A good variety, after