几种有机磷农药对大豆幼苗生长的影响

来源 :第二届生物农药理论探索及产业化技术创新研讨会 | 被引量 : 0次 | 上传用户:realmummy
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  [目的]探究几种田间常用有机磷农药对大豆幼苗生长的影响.[方法]选取特丁硫磷、乙酰甲胺磷、乐果、辛硫磷、敌百虫、毒死蜱6种有机磷农药作为供试药剂.设计不同的浓度和施药方法对水培大豆幼苗处理7d后,测其功能叶的叶绿素含量、植株的生物量以及根形态.[结果]大豆生长在含有5.00mg/L的特丁硫磷和50.00 mg/L乙酰甲胺磷的营养液中,处理组根部干重分别比对照组增长了113.56%、110.17%,处理组根部总表面积分别比对照组增长了68.19%、92.70%.其它4种供试药剂在设定的浓度和施用方法下对根系的影响不显著.[结论]在供试药剂中,5.00 mg/L特丁硫磷和50.00 mg/L乙酰甲胺磷施用在大豆的根部,可以促进大豆幼苗根部的生长.
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