两种生长调节剂对大叶白蜡幼苗生长的影响.doc

两种生长调节剂对大叶白蜡幼苗生长的影响

页数 7 字数 4261

摘要: 对一年生大叶白蜡实生苗用2种不同浓度的赤霉素、2,4-D进行处理。结果表明：两种生长调节剂在不同浓度下施用对大叶白蜡幼苗生长所起的作用差别较大。两种生长调节剂在较低浓度下对白蜡幼苗的高生长有较明显的促进作用，高浓度对白蜡幼苗高生长却表现出了明显的抑制作用。两种生长调节剂不同浓度下对白蜡幼苗径生长均有不同程度的促进作用，其中以500ppm的赤霉素、250ppm的2,4-D最为明显。

Different concentration treatments of two growth regulators were tested on seedlings of FraxinusamericanaL.The results show：Obvious differences were found in the growth of FraxinusamericanaL. Under different concentration treatments of two growth regulators.Relative remarkably Promotion on seedling height growth was discovered if treated at low concentrations，while treated at high concentrations show obviously inhibition on seedling height growth.Among all concentration treatments，gibberellin with 500 ppms and 2,4-D with 250 ppm has obvious effect.

关键词：生长调节剂,赤霉素；2,4-D,大叶白蜡,生长
Keywords：growth regulator； gibberellin； 2,4-D；
FraxinusamericanaL.； growth
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