禾谷类作物因倒伏引起减产。曾报道过乙烯利可减少倒伏,然而,其对籽粒产量的影响仍有争论。本研究中,把所选择出的半矮秆小麦(Triticum aestivum L.)、正常高度的大麦(Hordeum vulgare L.)和小黑麦(Triticale hexaploid L.)用乙烯利处理,测定:(1)乙烯利对产量影响与减少倒伏是否不同。(2)应用的最适生育期和浓度(公斤/公顷)。在两个生育朝,即孕穗后期和抽穗早期对田间生长的植株进行叶面施用(土壤是细砂混合潮湿堆积薄层干热软土)。在1976年,乙烯利应用的 Crops of cereals fall due to lodging. It has been reported that ethephon reduces lodging, however, its effect on grain yield remains controversial. In the present study, the selected Triticum aestivum L., Hordeum vulgare L. and Triticale hexaploid L. were treated with ethephon to determine: (1) Ethephon on the impact of production and reduce the lodging is different. (2) The optimum growth period and concentration for application (kg / ha). The plants grown in the field were foliar applied in two fertile months, ie late booting and early heading (the soil was fine sand mixed with damp-deposited thin layer of dry-hot soft soil). In 1976, ethephon was applied