Medicament and method for improving acid rain stress resistance of holboellia latifolia

The invention discloses an agent and a method for improving acid rain stress resistance of holboellia latifolia. The agent comprises 100-400 [mu] m l/L of titanium sulfate, 50-200 [mu] m l/L of curcumin and 5-20 [mu] m l/L of brassinolide. The method solves the problem that the harm of acid rain to holboellia latifolia cannot be effectively relieved in the prior art. The cultivation and utilization of the holboellia latifolia in areas with serious acid rain harm are not or rarely damaged, leaves are rarely yellowed, dried up and fallen off, the leaves are not shrunk or deformed, the total chlorophyll content is basically kept stable, the oxygen free radical generation rate and the hydrogen peroxide content are effectively inhibited, and the yield of the holboellia latifolia is increased. The activity of superoxide dismutase (SOD) and peroxidase (POD) is stably improved, so that the acid rain stress resistance of the holboellia latifolia plant is effectively improved. In the prior art, there is no method for e