通过一系列大麦化控药剂的研究试验得出：大麦化控药剂永丰素在降低大麦植株高度。提高大麦抗倒能力以及增加每稳结实粒数和千粒重方面有着显著的效果，对大麦的高产、稳产、优质起到了积极的作用。禾丰素使用的两个技术关键为：使用时期应掌握在孕穗初期；使用剂量以20ml／亩为宜。 Through a series of research and experiment on barley chemical control agents, we found that barley chemical control agent yunguangsu is reducing plant height of barley. Improve barley lodging resistance and increase grain yield and grain weight per thousand has a significant effect on barley high yield, stable yield, high quality play a positive role. Hefeng Su used two technical key: the use of the period should be mastered at the early bout; the use of dose to 20ml / mu is appropriate.