Bt emulsion: It is a commonly used bacterial bio-pesticide. Its finished product is beige emulsion. It has good emulsifying properties and wide insecticidal spectrum. It has a control effect on lepidopteran pests of more than 20 kinds of vegetables, tea, fruit, tobacco and other plants. 80～90%, the main control objects are pine caterpillar, corn borer, cotton bollworm, armyworm, rice leaf roller, tea caterpillar and so on. Bt emulsion is a stomach poison that can produce a special enzyme after eating. This enzyme can break down a protein in the insect's intestines, causing the insects to perforate the intestines, and the things in the intestines flow into the body cavity, and finally die from sepsis. When using, the temperature should be above 15 °C, generally 20 °C is appropriate, the application time should be 3 days earlier than the application of chemical pesticides.
Penicillium and Acaricidal Bacteria: The cabbage caterpillar eats the leaves of the wormwood, and the intestinal wall will perforate quickly, becoming a mass of mud and dying. The bacillus is used to control rice leaf roller and rice mites, and can also control pests such as flies, mosquitoes, armyworms, pine caterpillars, white ants, and rice mites.
Beauveria bassiana: It is a fungal biopesticide with special effects on the control of pine caterpillars and rice pests. When the white fungus liquid contacts the pest, it enters the pest through the body wall, and the mycelium will soon germinate, and the body fluid of the pest is absorbed, so that the pest becomes stiff and dead.
Jinggangmycin: There are special effects in the prevention and treatment of sheath blight. It inhibits the hyphae of rice sheath blight, and has an effective period of 15 to 20 days. It is resistant to rain and is not toxic to humans and animals.
Agricultural antibiotics and plant antibiotics. These two classes of pesticides are fungal biopesticide. The antibiotics used in production include chrysanthemum, gentamicin, polymycin, oxytetracycline, griseofulvin, actinomycin and streptomycin. For example, Nongkang 120 is a new type of agricultural antibiotic, which has good control effect on powdery mildew of melon, fruit, vegetables, flowers, wheat, tobacco and rice sheath and wheat.
Rural public
The aspheric lens uses a single element design, which helps reduce the number of lenses in the optical assembly. Unlike spherical lenses, aspheric lenses have a more complex surface, and the curvature of the surface gradually changes from the center of the lens to the edge of the lens. The most significant advantage is that it can correct the spherical aberration caused by the Spherical Lens in the collimation and focusing system. One of the applications of aspheric lenses includes focusing the output from a laser diode, which not only reduces the overall cost, but also outperforms components designed using traditional spherical optical lenses.
The asphere's more complex surface profile can reduce or eliminate spherical aberration and also reduce other optical aberrations such as astigmatism, compared to a simple lens. A single aspheric lens can often replace a much more complex multi-lens system. The resulting device is smaller and lighter, and sometimes cheaper than the multi-lens design.Aspheric elements are used in the design of multi-element wide-angle and fast normal lenses to reduce aberrations. Small molded aspheres are often used for collimating diode lasers.
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