ＡＳＬ是从碱法草浆黑液中提取精制而成的一种新型植物生长调节物质，经多年、多点反复应用试验与鉴定，确认它对多种作物有着稳定的增产效果及应用价值。其主要作用为：（１）促进植物分生组织的分生能力；（２）促进植物的光合作用；（３）提高植物的抗逆性。 ASL is a new plant growth regulator extracted and refined from alkaline black liquor. After many years of repeated application tests and identification, ASL has confirmed that it has a stable yield increase effect and application value for a variety of crops. Its main role is as follows: (1) to promote the meristematic ability of plant; (2) to promote the photosynthesis of plants; (3) to improve plant stress resistance.