福尔马林土壤处理剂扦插圃引起插穗叶片变红、脱落等症状，插穗死亡率高达５０％的药害。商品福尔马林是３７％～４０％的甲醛水溶液，可作土壤杀菌剂消毒土壤，它易挥发，对人、畜有毒害，在高温季节易对茶树插穗产生药害，表现为插穗叶柄及近叶柄的叶片上表面部分，颜色开始 Formalin soil treatment agent cuttings nursery leaves cause reddening, shedding and other symptoms, cuttings mortality up to 50% of the injury. Commodity formalin is 37% ~ 40% aqueous solution of formaldehyde, can be used as soil disinfectant disinfect the soil, it is volatile, toxic to humans and animals, easy to tea plant cuttings in the hot season phytotoxicity, manifested as cutting petiole and Part of the upper surface of the blade near the petiole, the color begins