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(四)栽培技术方面在1955年前保加利亚的葡萄大部是埋土防寒的.采用老式的窄行(行距2米)、3道铁丝、扇形整枝栽培方法.自1944年解放后发展了工业,人口逐渐流入城市,农村劳力减少,因此逐步研究了不埋土和适应机械化的栽植方式,在六十年代初开始实行宽行,行距3～3.5米;高架1.5～1.8米;新梢由绑蔓改为自由下垂不绑缚.现在高、宽、垂
(D) Cultivation techniques Most of Bulgaria’s grapes were buried cold-proof before 1955. The old-fashioned narrower rows (2 meters apart), three wires, and fan-shaped pruning methods were used.After the liberation of 1944, The population gradually flowed into cities and the labor force in rural areas decreased. Therefore, we gradually studied the planting methods that are not buried and adapted to mechanization. In the early 1960s, wide-width rows began to be implemented with spacing of 3 to 3.5 meters and height of 1.5 to 1.8 meters. Change to free drooping not bound, now high, wide, vertical