根茎部的灼伤与冻伤是园林植物常见的生理性病害,尤其在城市园林、育苗圃地和育苗穴盘中多见,随着全球气候异常的加剧,还在呈现增多的趋势根茎部灼伤的主要原因是土壤表层在阳光的直射下迅速增温,通过辐射和空气传导到已被阳光晒热的植物根茎部,由于植株忍受高温能力有限(尤其是幼苗)以及麦皮(尤其是老树)导热不良,膨胀不均等原因,超过 Root burns and frostbite are common physiological diseases of garden plants, especially in urban gardens, nursery gardens and nursery traps. With the global climate anomaly aggravating, there is still an increasing trend of rhizome burns The reason is that the soil surface rapidly increases in temperature under direct sunlight and is radiated and air-borne to the roots and roots of plants that have been sunbaked by heat. Since plants have limited heat tolerance (especially seedlings) and wheat (especially, old trees) Bad, unexplained inflation, more than