With the advancement of agricultural technology, the variety of pesticides is complex and the situation of pesticides causing phytotoxicity is also very common. Then how to solve the phytotoxicity of pesticides? Scientific medicine is the key, and then Xiaobian will introduce you in detail.
As a special commodity to control pests such as pests and diseases in agricultural production, pesticides mainly include insecticides , fungicides, herbicides and plant growth regulators. After the application of pesticides, the annual yield loss of crops can be reduced by 30% to 40%, and economic losses can be recovered by 300 billion US dollars. Of course, the use of pesticides is indeed a double-edged sword, especially the abuse of pesticides in recent years. It does not pay attention to the safe application of pesticides, which makes the agricultural residues of agricultural products exceed the standard, causing pollution to the agricultural ecological environment, especially the pollution of rural water resources. Serious, and at the same time bring hidden dangers to people's health. So how do you reduce the negative effects of pesticides?
The first is to adopt a plant protection policy of “prevention first, comprehensive preventionâ€. First, before the occurrence of crop pests, preventive measures, the hazard control in the early stages. After the onset of the disease, chemical, physical, mechanical and other control measures are taken to reduce the use of chemical pesticides. To put it simply, just like people, first of all, strengthen physical exercise and reduce the incidence of disease, instead of waiting for a lot of medicine after the illness.
The second is to prohibit the use of high-toxic and high-residue pesticides. Develop new low-toxic, environmentally friendly new pesticides.
The third is to supervise the use of pesticides and to safely apply pesticides. In fact, the root cause of many agricultural products exceeding the standard is the abuse of pesticides, and pesticides are not applied strictly according to the interval of application. The safe interval of pesticide use refers to the number of days between the last application of pesticides and the harvest of agricultural new products, which can ensure that the agricultural residue content of agricultural products does not exceed the standard.
After the application of each pesticide, his safety interval is different. Therefore, the farmers' friends must observe the instructions of the pesticide when using the pesticide, and strictly follow the instructions in the application frequency and application amount. At the time of harvest, the number of days in the safety interval must be sufficient, so as not to cause the agricultural residue content of agricultural products to exceed the standard.
O Ring , Rubber O Ring: An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.
O ring are installed in the groove, moderate compression section for type O Sealing Ring (circle). Because of its manufacturing cost is not high, convenient installation and therefore has been widely used in the sealing industry.
O-ring mainly used for fluid (such as: water, oil, air, chemical solvents, chemicals, etc.) and sealing the gap between a static long-term use temperature of -60 ℃ to 220 ℃.. Varies on material, the use of static pressure is less than 20MPa. Sometimes for dynamic, dynamic pressure when using less than 5MPa. And semiconductor vacuum seal.
An o-ring technically is also a gasket but it's shape and the material it is made from differs from most gaskets. The biggest difference between the two is o-rings are almost exclusively used for very high pressure applications such as hydraulics where a regular cork, paper or Rubber Gasket would fail.
Gasket is also called as static seal. It is a mechanical element use to prevent the leakage of fluid between the two components which are static or doesn't have relative motion. While Oil Seal also called as dynamic seal is use to prevent leakage of fluid between two components having relative rotary or sliding motion.
A gasket is primarily used to seal two mating surfaces. It prevents leakage of fluids. Washers on the other hand are used primarily to spread pressure evenly, and are used in places of high vibration.
A washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut.
Our Factory used materials: Nitrile Rubber, Silicone Rubber, Fluorine Rubber, EPDM Rubber, Acrylic Resin, Tetrapropanate Fluorine Rubber, Chloroprene Rubber, Epichlorohydrin Rubber, Fluoro Silicone Rubber, Hydrogenated Nitrile Rubber, Butyl Rubber, Natural Rubber, Polyurethane Rubber, Styrene Butadiene Rubber, PE, PTFE and so on.
Sealing Ring
Sealing Ring,Rubber Seal Ring,Plastic Washer,Rubber Gasket
Zhejiang Dream Industry Limited , https://www.mlwdream.com