给树“吃解毒药”防止路面结冰传统用食盐，但它会污染土壤，招致树木死亡，据称，如果“用盐过多”的情况这样延续下去，那么在２０００年德国的城市，将不会剩下一棵树，为此，汉堡大学的学者研究试验了一种药方，按照药方需在土壤中施用钙盐和氧化镁。施用方法很简单：... Give the tree “antidote to poison” to prevent the traditional use of salt on the road icing, but it will pollute the soil, causing trees to die, allegedly, if the “excessive use of salt” so continue, then in 2000 the German city, will As a result, one tree will not be left, and to this end, scholars at the University of Hamburg have studied a prescription for the administration of calcium salts and magnesium oxide in soil according to the prescription. The application method is very simple: ...