短语词组短语selective herbicide 选择性除草剂organomercurial herbicide 有机汞除草剂;有机汞除莠剂;有机汞herbicide formulation 灭草剂配方herbicide e 除草剂;除莠剂preemergence herbicide 苗前处理除草剂herbicide PPT 除草剂PPTherbicide damage 除草剂药害Herbicide antidote 除草剂解毒剂 返回 herbicide