Corn borer is one of the common pests of corn. Commonly known as corn borer, its larvae colonize the heart of the corn. After the victim leaves are opened, there are horizontal holes, which are extremely harmful to corn. Because the corn borer is hidden, In the past, inspections often required manual stripping, which was very inconvenient. After Topp Cloud's introduction of the agricultural perspective instrument, the detection of corn borers became very simple. Through the instrument scan, the corn stalks could be quickly and clearly detected. Corn borer and other pests provide an important scientific basis for the prevention and control of corn borer.
In corn production, corn borer is one of the most difficult to control pests. As long as there are corn growing areas in the world, they can see their presence, and where they appear, where the corn production will be reduced, the light 5-10%, serious, can reduce production by more than 30%. In general, the prevention and treatment of corn borer should be carried out as early as early prevention and treatment. Because the long period of occurrence of corn borer is generally unfavorable, the effect of general use of borers is not ideal. Therefore, in order to improve the forecast effect of corn borer pests, modern corn production It is appropriate to use agricultural perspective instruments to carry out inspections.
The occurrence of corn borer has very obvious characteristics. Its damage is mainly caused by the trapping of insects. If it is at the early stage of its occurrence, we can detect the corn borer pests hidden in the corn stems through the agricultural perspective instrument and carry out pests in time. Prevention and control can not only minimize its harm, but also can significantly improve the control effect of corn borer pests and effectively increase the economic benefits of corn planting. Therefore, it can be seen that the application of the agricultural perspective instrument in corn borer control is very feasible.
In general, the winter larvae of corn borers enter the spawning stage in mid-to-late June, and successive generations of larvae hatch into the environment. The northern spring maize will also enter the jointing stage one after another. It is a critical period for the control of corn borer, and therefore it will be in mid-late June and mid-July. In the critical period of this corn borer prevention and control, a good agricultural perspective instrument should be used to intensify the inspection of hidden pests on corn stems to ensure corn production.
Graphite powder soft, dark gray; greasy feeling, can contaminate the paper. Hardness of 1 to 2, along the vertical direction with the increase in the hardness of the hardness can be increased to 3 to 5. Specific gravity of 1.9 to 2.3. In the isolated oxygen conditions, the melting point of more than 3000 ℃, is one of the most resistant minerals. At room temperature, the chemical properties of graphite powder is relatively stable, insoluble in water, dilute acid, dilute alkali and organic solvents; materials with high temperature conductive properties, do refractory materials, conductive materials, wear-resistant lubricating materials.
Graphite powder is widely used, according to its different use, we can be divided into the following categories of graphite powder
1. Scale graphite powder
Flake Graphite powder is the most widely used, but also processed into other graphite powder of the original material, scaly graphite powder specifications from 32 to -12000 mesh range, scaly graphite powder toughness is good, with good thermal conductivity and corrosion resistance, can be used as refractory Materials, wear-resistant lubricating materials, conductive materials, casting, Fansha, die and high temperature metallurgical materials
2. colloidal graphite powder
Colloidal graphite is formed by the average dispersion of graphite particles below 2u meters in an organic solvent. Colloidal graphite is a viscous suspension of black filaments. Colloidal graphite powder with high quality natural flake graphite performance, in high temperature conditions with special oxidation resistance, self-lubricating and plasticity, at the same time with good conductivity, thermal conductivity and adhesion, mainly used in sealing, metallurgical stripping and other industries
3. Ultrafine graphite powder
Ultrafine graphite powder specifications are generally between 8000 mesh -10000 mesh, mainly used in powder metallurgy release agent, the production of graphite crucible, the battery anode and make conductive materials additives
4, nano-graphite powder
Nano-graphite powder main specifications for the D30 50 100 400 nm, nano-graphite powder process is more complex, low production rate, so relatively high prices, mainly used in anti-corrosion coatings, lubricants additives, grease additives, precision graphite seal And other industries, in addition, nano-graphite powder in scientific research institutions also has a high application value
5, High Purity Graphite powder
Graphite Powder,Nano-Graphite Powder,Graphite Carbon,Carbon Brush For Graphite Powder
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