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一、引言近年来。日本的葡萄栽培处于停滞状态,但是巨峰品种因适于消费者的嗜好,而且果粒大、品质优、商品性很高,全国各地的栽植面积都在增加,1980年栽培面积已达葡萄种植面积的15%,面积、产量都占第三位,已成为日本葡萄栽培的主要品种,在长野县,巨峰葡萄的发展,1980年达1,165公顷,相当于全县葡萄面积的48%。栽植比率为全国之冠。而且还有上升的趋势。巨峰是4倍体品种,10年生以内的幼树长势旺盛是其特点,新梢生长旺易徒长,生长停止期常常延迟,容易产生落花、落粒和着色不良现象,产量很不稳定。
First, the introduction in recent years. Japan's viticulture is at a standstill, but Kyoho varieties are suitable for consumer tastes and have large fruit size, high quality and high product quality. The planting area in all parts of the country is increasing. In 1980, the cultivated area reached the grape acreage 15% of the area, yield third place, has become a major grape cultivation in Japan, in Nagano Prefecture, Kyoho grapes development in 1980 reached 1,165 hectares, equivalent to 48% of the county grape area. Planting the highest rate of the country. And there is an upward trend. Jufeng is a tetraploid breed. It is characterized by vigorous growth of saplings within 10 years of age. The growth of new shoots tends to be long and the growth stoppages are often delayed with easy falling, falling and coloring problems. The yield is very unstable.