A herbicide (herbicide) is a substance that causes weeds to die thoroughly or selectively, also known as herbicides, used to destroy or inhibit the growth of plants.

Among them, sodium chlorate, borax, arsenic acid salt, and TCA have a dead effect on any kind of plant, which is affected by three factors, such as herbicides, plants and environmental conditions. According to the function of the pest and selective herbicides, selective herbicides, especially nitrophenol, Chlorobenzene, carbamate derivatives are most effective. The development of herbicides in the world gradually stabilized, the main development of high efficiency, low toxicity, broad spectrum, low dosage of varieties, small environmental pollution of the disposable treatment agent has become mainstream.