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本文主要报道张家口半干旱地区龙眼葡萄浆果可溶性固形物与早期产量、果/梢比及单位蔓截面积载果量的相关性。研究表明,浆果可溶性固形物含量与株产、果/梢比、单位蔓截面负载果实量呈极显著负相关。在13～19度浆果可溶性固形物范围内,3～5年生单株产量越高,浆果品质越低。而适当地控制单株产量是提高浆果品质的关键。
This article mainly reports on the relationship between soluble solids content of longan grape berries and early yield, fruit / shoot ratio and fruit per unit cross-sectional area in Zhangjiakou semiarid area. Studies have shown that soluble solids content of berries and plant yield, fruit / shoot ratio, the unit of fruit load per unit area was extremely significant negative correlation. Within the range of soluble solids from 13 to 19 degrees, the higher the yield per plant from 3 to 5 years, the lower the quality of berries. The proper control of the yield per plant is the key to improve the quality of berries.