采用田间试验研究了烯效唑干拌种对冬小麦生理、形态特征及产量的影响。结果表明,与对照相比,烯效唑显著增加了小麦次生根的数量和单株干重,小麦次生根数量的增加以抽穗期最为显著;植株干重的增加以拔节期和抽穗期最为显著;烯效唑能显著降低株高,随浓度增加而更显著;烯效唑能显著增加小麦叶片叶绿素含量,越冬期高于拔节期;烯效唑能显著增加粒位叶叶面积;烯效唑能显著增加小麦分蘖数,以增加冬前分蘖最为显著;烯效唑提高了产量,同时小麦单位面积穗数和千粒重均有不同程度的增加,其增加顺序为:单位面积穗数>千粒重;烯效唑可导致每穗粒数降低,随浓度提高而更明显。烯效唑的使用浓度以20 mg/kg为佳。 Field experiments were conducted to study the effects of unifonazole dry dressing on the physiological, morphological characteristics and yield of winter wheat. The results showed that, compared with the control, uniconazole significantly increased the number of secondary roots and dry weight per plant, and the increase of secondary roots in wheat was the most significant in heading stage. The increase of dry weight was the most significant in jointing stage and heading stage ; Uniconazole can significantly reduce plant height, with the concentration increased significantly more significant; uniconazole can significantly increase the chlorophyll content of wheat leaves, overwintering stage than jointing; uniconazole can significantly increase the grain leaf area; uniconazole Can significantly increase the tiller number of wheat in order to increase the most significant tillering before winter; uniconazole increased yield, while the number of spikelets and 1000-grain weight per unit area of ​​wheat increased in varying degrees, the order of increase is: Spike per unit area> 1000-grain weight; Effectzole resulted in a decrease in grain number per spike, more pronounced with increasing concentration. Uniconazole concentration of 20 mg / kg is better.