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High quality tapered roller bearing 32024X
|/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';|
Old type: 2007124E
Inner diameter (d): 120mm
Outer diameter (D): 180mm
Installation height (T): 38.0mm
Inner ring height (B): 38.0mm
Outer ring height (C): 29.0mm
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Insecticides are chemical agents used to control pests. Including organic pesticides (organochlorine, organophosphorus, organic sulfur preparations and carbamates and pyrethroids), inorganic insecticides (inorganic arsenic, inorganic fluorine, inorganic sulfur preparations), plant insecticides, minerals Oil insecticides, microbial pesticides. Insecticides are the most widely used and most widely used pesticides. Most of them can only kill insects and cannot prevent diseases. Insecticides play an extremely important role in increasing agricultural production and solving human food problems.
According to the mode of action, it can be classified as:
1, stomach poison. Through the insect mouth into its digestive system to play a poisonous killing effect, such as trichlorfon.
2, contact agents. After contact with the epidermis or appendage, it penetrates into the worm body, or corrodes the waxy layer of the worm body, or blocks the valve to kill pests, such as pyrethroids, mineral oil emulsions, and the like.
3, fumigant. The use of volatilization of toxic gases, liquids or solids to cause steam poisoning of pests or pathogens, such as methyl bromide.
Systemic insecticides. It is absorbed and transported to the whole plant by the seeds, roots, stems and leaves of the plant. Within a certain period of time, the original body or its activated metabolites feed on the plant tissue or suck the plant juice with the pests, and enter the worm body to kill and kill. Such as dimethoate and so on.
Insecticide Material,fipronil insecticide,organic insecticide
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