以山西农业大学培育的冬小麦031165为试验材料,采用完全随机设计,研究不同烯效唑浸种处理(烯效唑浸种处理分别设15,30,60,120 mg/kg,同时以清水浸种为对照)对小麦生长发育、产量构成的影响.结果表明,烯效唑浸种使得小麦分蘖增加、叶色加深、叶片变短且宽度增加,通过增加茎秆粗度抵抗倒伏,其中,30 mg/kg烯效唑处理时小麦地上部长势最佳;烯效唑浸种小麦的次生根数及根系活力均极显著高于对照,以30 mg/kg烯效唑浸种处理最为明显,用量过高则不利于小麦根系活力和次生根数的增加;烯效唑浸种可促进下层根系的发展,从而能够延缓小麦根系后期的衰老;烯效唑浸种可以明显增加小麦的产量.从整体上看,30 mg/kg烯效唑处理对小麦生长发育及产量的综合效应最佳.%Experiments using randomized block method were conducted by taking winter wheat 031165 as material cultivated by Shanxi Agricultural University.Compared with dealing with water,the effects of varied uniconazole concentration(15,30,60,120 mg/kg) on growth and yield of wheat were studied.The results showed that seed-soaking with uniconazole enhanced wheat tillering,leaves' color,and the length of leaves became short following width increase,at the same time,more stronger stalk resisted lodging.Seed-soaking with 30 mg/kg uniconazole had the biggest effect on wheat aboveground part.The wheat treated by uniconazole was significant better than control about the number of secondary root and root activity.30 mg/kg was the most significant,while higher concentration didn't contribute to enhancing the two indexes.Seed-soaking with uniconazole could promote the development of lower root,and then delay ageing of wheat root in later stage.Seek-soaking with uniconazole could enhance wheat yield remarkably.Overall,30 mg/kg uniconazole was the best comprehensive effect on wheat growth and development and yield.
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