在葡萄栽培管理中,在多氮、多水、重剪、深翻地时大量施用有机肥和架面郁蔽光照不足的各种情况下,易产生枝叶徒长,落花落果严重,单性结实的小豆拉增多,其中以多氮栽培的危害最大。所以,在日本的夏湿气候条件下,以增施磷肥为卞的“控氮巨峰栽培”成为一项重要经验。 In the viticulture management, in a variety of cases of excessive nitrogen, water, heavy shear, deep plowing and heavy application of organic fertilizer and shelter light oppression, it is easy to produce branches and leaves of a long, falling fruit serious, parthenocarpy Adzuki beans increased, of which the most harmful to nitrogen cultivation. Therefore, under the condition of summer humid climate in Japan, “nitrogen-controlled giant cultivation” using phosphate fertilizer as an extension has become an important experience.