短语词组短语selective e herbicide 选择性除草剂no selective herbicide 灭生性除草剂non -selective herbicide 非选择性除草剂;灭生性除草剂;无选择性除莠剂non selective herbicide 非选择性灭草剂selective post -sprout herbicide 选择性芽后除草剂 返回 selective herbicide