1. A herbicidal product containing, as the only components with a herbicidal effect: A) flufenacet (component A), B) aclonifen (component B) and C) diflufenican (component C). 2. The herbicidal agent according to claim 1, wherein the mass ratio of the components with the herbicidal action of A: B: C is (1-2000) :( 1-100) :( 1-500) .3. The herbicidal agent according to claim 1, wherein the mass ratio of the components with the herbicidal action of A: B: C is (1-40) :( 1-25) :( 1-30). 4. The herbicidal agent according to claim 1, wherein the mass ratio of the components with the herbicidal action of A: B: C is (1-10) :( 1-10) :( 1-8) .5. The herbicidal composition according to claim 1, containing the respective herbicidal components in the following consumable amounts: component A: 10-2000 g AB / ha, component B: 10-5000 g AB / ha, component C: 1-500 g AB / ha. 6. The herbicidal composition according to claim 1, containing the respective herbicidal components in the following consumable amounts: component A: 30-400 g AB / ha, component B: 80-3000 g AB / ha, component C: 10-300 g AB / ha. 7. The herbicidal composition according to claim 1, containing the respective herbicidal components in the following consumable amounts: component A: 50-300 g AB / ha, component B: 80-1000 g AB / ha, component C: 30-200 g AB / ha. 8. The herbicidal composition according to claim 1, further comprising additives conventional for plant protection and / or prescription auxiliary components. The herbicidal agent according to one of claims. 1-8, additionally containing one or more other components selected from the group of agrochemical active substances, including insecticides, fungicides and protective agents. 10. The use of herbicidal agents according to one of claims. 1-9 for controlling harmful plants. 11. The use of a herbicidal agent according to one of claims. 1-9 for controlling herbicide resistant harmful plants. 12. A way to combat unwanted growth1. Гербицидное средство, содержащ