Abstract: In order to verify the application effect of GGR trace element seed dressing agent-maize special and GGR amino acid-containing water-soluble fertilizer-maize special with green plant growth regulator GGR 6as functional component in corn cultivation,Zhengdan 958variety maize was used as the experimental material in this experiment.The combination of hydroponics and field experiments were used to study the effects of GGR trace element seed dressing agent-maize special and GGR amino acid water-soluble fertilizer-maize special on maize growth and yield.The results showed that compared with CK,the application of plant growth regulators during seed dressing before sowing and foliar topdressing of maize could effectively improve the germination rate,germination potential,germination index and vigor index of seeds,as well as the growth indexes such as plant height,stem diameter,root number,seedling index and photosynthetic pigment content of leaves at seedling stage,and finally improved the yield indexes such as ear length,grain number per ear and thousand grain weight of maize.During 2g GGR trace element seed dressing agent-maize special seed dressing 1kg,foliar spraying 25g·L^-1 urea+7.5g·L^-1 potassium dihydrogen phosphate+0.5g·L^-1 GGR-maize special at large bell mouth period,foliar spraying 25g·L^-1 urea+10g·L^-1 potassium dihydrogen phosphate+0.5g·L^-1GGR-maize special at filling period,the germination index,seedling growth index and yield component index of maize were significantly higher than CK,and the yield of maize increased by 8.31%,which is the best fertilization ratio.