【摘要】 为探究能够有效降低大麦株高的措施,降低因倒伏带来的产量损失,以不做控高措施的处理为对照,设置6个不同的控高方案。结果表明:只在生理拔节期喷施60 g/667 m~2的多效唑和倒0.5叶喷施100 m L/667 m~2的玉米健壮素的处理,控高效果不显著;在见芒10%喷施玉米健壮素100 m L/667 m~2的控高效果最好。结合产量来看,本试验在倒0.5叶喷施玉米健壮素70 m L/667m~2+见芒10%喷施玉米健壮素70 m L/667 m~2的综合效益是最好的。更多还原

【Abstract】 The goal of this study was to explore effective measures to control the plant height of barley and to reduce its yield loss caused by lodging. Six different chemical treatments were set up in addition to the control treatment without any plant growth regulators applied. The results showed that the treatment with a spray application of paclobutrazol at 60 g/667 m~2 in the physiological jointing stage and the treatment with a spray application of maize robust hormone at 100 m L/667 m~2 in the inverted half-leaf stage both had no significant inhibitory effect on the plant height of barley. By contrast, the treatment with a spray application of maize robust hormone at 100 m L/667 m~2 in the stage when 10% plants had visible awns achieved the most significant inhibitory effect on plant height. Based on the effects of chemical treatments on plant height and yield, the greatest overall benefit was achieved by the treatment with two spray applications of maize robust hormone at 70 m L/667 m~2, one in the inverted half-leaf stage and the other in the stage when 10% plants had visible awns.更多还原