日本科学家发明了给树“打针”,让树木长成彩色的树木的方法。其做法是:在离地20—30厘米的树干上,打3个10厘米深的小孔,然后插入软管,灌入盐基性染料溶液。“打针”后4个月,树木就开始变色。如果注入的是红色染料溶液,树木便变成红色;注入黄色染料溶液,树木便变成黄色。不论什么色彩,都会“染”遍全树的枝干,象天然长成的一 Japanese scientists invented the method of “giving injections” to trees and growing them into colored trees. The practice is: on the trunk of 20-30 cm off the ground, hit three 10 cm deep hole, and then insert the hose, poured into the salt-based dye solution. Four months after “injection,” the trees started to change color. If a red dye solution is injected, the trees turn red; the yellow dye solution is injected and the trees turn yellow. No matter what color, will be “dyed” all over the branches of trees, like a naturally grown one