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Journal of Agriculture ›› 2022, Vol. 12 ›› Issue (6): 14-17.doi: 10.11923/j.issn.2095-4050.cjas2020-0149

Special Issue: 生物技术 小麦

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5% Prohexadione Calcium EA: Effects on Lodging Resistance, Yield and Its Related Factors of Wheat

SUN Bin1(), ZHANG Jiajia1, SONG Yujiao1, HAI Fei1, WANG Lei2   

  1. 1Henan Vocational College of Agriculture, Zhongmu 451450, Henan, China
    2Agricultural and Rural Committee of Zhongmou County, Zhongmu 451450, Henan, China
  • Received:2020-07-28 Revised:2020-10-19 Online:2022-06-20 Published:2022-07-08


In order to explore the effect of prohexadione calcium (Pro-Ca) on the growth and yield factors and safety of wheat, taking wheat variety ‘Yumai 49’ as material, different doses of 5% Pro-Ca EA were applied to carry out field experiments after wheat turning green. The results showed that the application of 5% Pro-Ca EA (150-600 g/hm2) could dwarf plant height, reduce internode length, increase stem diameter and stem wall thickness. Pro-Ca could increase the number of ears, grains per ear, 1000-grain weight and yield of wheat. The application during the period of returning to green of 5% Pro-Ca EA 300 g/hm2 and 5% Pro-Ca EA 300 g/hm2 + 0.01% brassinolide SL150 mL/hm2 could achieve higher yield, reaching 7410.0 kg/hm2 and 7560.0 kg/hm2 respectively, increase by 10.7% and 13.0% compared with that of CK. 5% Pro-Ca EA is safe and harmless to wheat, so it is recommended to be popularized in wheat production.

Key words: prohexadione calcium (Pro-Ca), wheat, lodging resistance, yield, influence