Insecticides: avermectin, matrine, pyrethrum; fungicides: chlorothalonil, Kellu, Fuxing; herbicides: Shitianbu, trifluralin, Gaicaoneng.
Pesticides refer to chemical agents used to control pests. Including organic pesticides (organochlorine, organophosphorus, organic sulfur preparations, carbamates and pyrethroids), inorganic pesticides (inorganic arsenic, inorganic fluorine, inorganic sulfur preparations), plant-based pesticides, mineral Oil pesticides, microbial pesticides. Pesticides are the most widely used and most diverse type of pesticides. Most of them can only kill insects but cannot prevent diseases.
Pesticides have played an extremely important role in increasing agricultural production and solving human food problems, but they are also the most important factor causing pesticide pollution to the environment (for example, organochlorine pesticides have stable chemical properties, are not easily degraded, and are easily Accumulation in soil and organisms) is also closely related to the decrease or even the extinction of natural enemies of pests and other beneficial organisms.
Pesticides are mainly used to prevent and control agricultural pests and urban sanitary pests. They have a long history of use, large amounts of use, and many varieties. In the 20th century, agriculture developed rapidly, and pesticides greatly increased agricultural output. However, almost all pesticides severely alter ecosystems, most are harmful to humans, and others are concentrated in the food chain. A balance must be struck between agricultural development and the environment and health. According to their sources, they can be divided into two categories: biogenic pesticides and chemically synthesized pesticides.