Refers to weed herbicides can occur completely or selectively herbicide agents dead wholesalers, known as herbicides herbicide prices to eliminate or inhibit the growth of a plant species. Wherein the sodium chlorate, borax, arsenic acid, TCA for any kind of plants have withered role, its role by herbicides, plant and environmental conditions three factors. Herbicides: common varieties of organic compounds, can be widely used to control farmland, orchards, flower nursery, grasslands and non-arable land, railway lines, rivers, reservoirs, warehouses and other weeds, miscellaneous irrigation, Zashu other harmful plants. Herbicide mode of action can, spraying parts, compound classification and many other sources.