油菜秧苗对^3H—多效唑的吸收及其影响因素

ABSORPTION OF ~3H-MET BY RAPE SEEDLING AND ITS EFFECTS

油菜秧苗的根茎叶都能吸收~3H-MET,叶片吸收能力高于根茎;叶片吸收的~3H-MET约有46％滞留在喂饲部位,仅3％运转到根部.而根系吸收的~3H-MET约有50％运转到地上部。叶和茎吸收的~3H-MET主要运转到新生叶片,其次运转到老叶。油菜籽也能吸收~3H-MET,滞留于壳皮中的量约为60％。气温、土壤质地与土壤湿度等影响油菜秧苗对~3H-MET的吸收。