N-aryltetrahydrophthalimide compounds of the general formula I ##STR1## where R.sup.1 is hydrogen or halogen, R.sup.2 is halogen, A is substituted or unsubstituted C.sub.2 -C.sub.4 -alkylene or C.sub.2 -C.sub.4 -alkenylene, B is oxygen, sulfur or a group NR.sup.3, where R.sup.3 is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.7 -cycloalkyl, C.sub.1 -C.sub.4 -haloalkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.3 -C.sub.6 -alkynyl, and methods of controlling unwanted plant growth and of influencing plant growth.
                            通用公式I的N-芳基四氢邻苯二
酰亚胺化合物##STR1##其中R.sup.1是氢或卤素,R.sup.2是卤素,A是取代或未取代的C.sub.2 -C.sub.4-烷基或C.sub.2 -C.sub.4-烯基,B是氧、
硫或基团NR.sup.3,其中R.sup.3是氢或取代或未取代的C.sub.1 -C.sub.6-烷基、C.sub.3 -C.sub.7-环烷基、C.sub.1 -C.sub.4-卤代烷基、C.sub.2 -C.sub.6-烯基或C.sub.3 -C.sub.6-炔基,以及控制不受欢迎的植物生长和影响植物生长的方法。