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树液是指植物韧皮部输送的流体物质,这些物质提供了整株植物的生长所需的分和养分。树液和乳胶树脂不是同一物体[1]。树液分为木质部树液和韧皮部树液两种。许多动物都以吸食树液作为食物。枫糖亦是一种树液。

正在失去树液的树干断裂口
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