以京玉葡萄 (VitisvineferaL cv Jingyu)幼苗为材料 ,用遮阳网营造弱光环境 ,研究了葡萄幼苗在弱光环境中的形态和生长反应。京玉葡萄幼苗的相对生长速率、根生物量比、根冠比和总生物量随遮荫程度的加深而降低 ;叶生物量比、支持结构生物量比、株高、比茎长、总叶面积、叶面积率和比叶面积增加。这些结果表明葡萄幼苗的形态和生长反应对弱光环境具有生态适应性 ,弱光环境下葡萄幼苗的比茎长和株高增加有利于葡萄尽快到达有利的光环境 ,而叶面积率和比叶面积的增加有利于其充分利用弱光环境中有限的光照 Taking the seedlings of Vitis vinifera L cv Jingyu as materials, the shading net was used to construct the low light environment, and the morphology and growth response of the grape seedlings in low light environment were studied. The relative growth rate, root biomass ratio, root / shoot ratio and total biomass of Jingyu grape seedlings decreased with the deepening of shade degree. The leaf biomass ratio, supporting structure biomass ratio, plant height, specific stem length, Area, leaf area ratio and specific leaf area increased. These results indicate that the morphological and growth responses of grape seedlings are ecologically adaptive to low light conditions. Compared with stem length and plant height, grape seedlings are more conducive to the grapes reaching a favorable light environment as soon as possible, while leaf area ratio and leaf ratio The increase in area is conducive to making full use of the limited light in low-light environments