在自然界万紫千红的繁花中，你是难以看到纯黑色花卉的。即使不常见到的黑牡丹、黑玫瑰等花，也不是纯黑色的，而是紫黑色的。为什么难以见到纯黑色花呢首先，花能呈现出各种颜色，这是由花瓣中所含的花青素决定的。花青素和不同的金属元素相结合，就会呈现出不同的颜色。目前 In the colorful nature of flowers, you can hardly see the pure black flowers. Even infrequently seen black peonies, black roses and other flowers, is not pure black, but purple black. Why it is difficult to see pure black tweed First, flowers can show a variety of colors, which is determined by the anthocyanins contained in the petals. Anthocyanins and different metal elements combine to show a different color. Currently