大豆苗期叶片形态对烯效唑干拌种的响应

利用Laser Area Meter CI-203在大豆三叶期探究大豆不同复叶的形态对烯效唑干拌种的响应.结果表明:不同复叶的叶柄长度、叶长和叶宽对烯效唑的敏感程度存在差异,且各复叶指标的变化与烯效唑拌种浓度变化的相关性均达到极显著水平.烯效唑拌种处理后第1复叶的叶柄长、叶长和叶宽度受到抑制,叶面积减小,第2、3复叶的叶柄长、叶长和叶宽的伸长得到促进,叶面积增加.烯效唑干拌种适宜范围为6～12 mg·kg~(-1)时,利于大豆苗期叶片形态发展,其中以9 mg·kg~(-1)拌种浓度最适宜.

Response of Leaf Morphological Characters of Soybean Seedlings to Uniconazole Treatment for Dry Seed

The third trifoliolate stage is a very important period for soybean field management. In order to research the response of leaf-configuration of different compound leaf of soybean seedling after Uniconazole applying for dry seed,the leaf length, leaf width and leaf area was measured with the Laser Area Meter CI-203. Results showed Uniconazole dry seed treatments had significant influence on morphology traits of the first three trifoliolate. Uniconazole treatment restrained petiole length, leaf length and leaf width of the first trifoliolate, and decreased the leaves area. Uniconazole treatment promoted the petiole length,leaf length and width of the second trifoliolate,and increased the area . The appropriate concentration of Uniconazole that beneficial for the development of soybean seeding leaves is 6-12 mg·kg~(-1),and the optimumconcentration of Uniconazole is 9 mg·kg.