Abstract:

Studying the effect of different plant growth regulators on maize development and yield, it is useful to select regulators in large area of production. Our research selected Chongqing leading variety the ‘Yudang 30’ and five plant growth regulator as material, employed randomized block experiment and leaf spray method. The results showed that, five regulators reduced plant height and ear position height, increased stem wide and resistance, and enhanced yield and profit in different degrees. The yield of material treated with cycocel soluble powder (AZ) was the highest among all the treatments, reached 7526.67 kg/hm2, which increased 828.34 kg/hm2 than the control, and significantly increased 12.37%; the yield of materials treated with other plant growth regulators increased from 123.34 kg/hm2 to 613.34 kg/hm2 than the control, increased 1.84%-9.16%.