Abstract:

To confirm the regulating effect of the four plant growth regulators such as Tianda-2116, Haoxianshou, sodium nitrophenolate and brassinolide on growth, yield, and quality of maize, and to provide the basis for application of the four plant growth regulators in maize production. Xingdan-131 was selected as the test material. A presoaking technique was used to evaluate the effect of these plant growth regulators on growth, yield and quality of maize under the field conditions through random block design. The results showed that the four plant growth regulators could enhance the growth, yield and quality of maize. The application Tianda-2116 had a significant effect on the germination rate and yield of maize. After seed was pre-soaked with Tianda-2116 solution, germination rate of maize was increased 11.1% as compared with CK, and increase maize yield per hectare was 850.4 kg than CK, with increase rate of 9.6%. The use of Haoxianshou and brassinolide also markedly enhanced maize yield, which increased by 7.9% and 7.4% as compared with CK, respectively. Sodium nitrophenolate had an evident impact on thousand corn weight of maize, which was 17.3g higher than CK. Differences were statistical significance between sodium nitrophenolate treatment and CK. Tianda-2116, Haoxianshou, sodium nitrophenolate or brassinolide could used as seed soaking agent in maize production.