The results indicated that the plant growth regulator could increase plant height, main root length, lateral root number结果表明，植物生长调节剂可促进大豆幼苗茎叶生长和主根伸长，增加侧根数，加大根冠比，提高叶绿素含量、脯氨酸含量和过氧化物酶(POD)活性，从而增强了植株的抗旱能力。