日本地处温带,四面环海,雨量充沛,地多丘陵,适宜发展果树。1978年栽培面积达604万亩,总产120.18亿斤。落叶果树主要有梨、桃、李、杏、柿、葡萄、樱桃、苹果、核桃、板栗等。六十年代,果树生产进入了大面积、专业化、商品化生产。为达到省工、节能和竞争的目的,采取了一系列提高单产和改进品质的栽培技术。主要有以下几项: 一、陶汰劣种,更新良种过去日本苹果栽培的主要品种以国光、红玉、元帅比重较大。1966年国光的栽培面 Japan is located in temperate zone, surrounded by the sea, abundant rainfall, more hills, suitable for the development of fruit trees. In 1978, the cultivated area reached 6.04 million mu with a total output of 12.018 billion kg. Deciduous fruit trees are mainly pears, peaches, plums, apricots, persimmons, grapes, cherries, apples, walnuts, chestnuts and so on. Sixties, fruit trees have entered a large area, specialized, commercial production. In order to achieve the goal of labor saving, energy saving and competition, a series of cultivation techniques for improving yield and quality are adopted. Mainly the following: First, eliminate the bad potatoes, new varieties of apple cultivation in Japan in the past to grow the main varieties Guoguang, ruby, Marshal a larger proportion. 1966 Guoguang cultivation surface