Double-Convex Lenses are used in image relay applications, or for imaging objects at close conjugates. Double-Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of industries or applications.
Optical glass lenses have a wide variety of applications. Germanium (Ge), Silicon (Si), or Zinc Selenide (ZnSe) lenses are ideal for transmitting the Infrared (IR) spectrum, while Fused Silica is well suited for the Ultraviolet (UV).
Optical Lenses are optical components designed to focus or diverge light. Optical Lenses, which may consist of a single or multiple elements, are used in a wide variety of applications from microscopy to laser processing.
Glass Convex Lens,Double Convex Lens,Glass Double Convex Lens,Symmetric Double Convex Lens ChangChun Worldhawk Optics Co.,Ltd , https://www.worldhawk-optics.com
2, the main push technology 1 the use of Sanlichuan top pulp ridge deep application of fertilizer at the bottom of drought-resistant technology (in early April ridge).
2 adopt soil testing and formula fertilization technology. Principles of fertilization: Apply basic fertilizer, light Miaofei, skillfully applying stalk, storming panicle, and granulizing. Maize is a high-yield crop that requires more fertilizer. According to the determination of soil, determine the best formula for fertilization. Fertilization should follow the principle of using organic fertilizers as the main method and chemical fertilizers as the supplement. In general, 30-40 cubic meters of agricultural fertilizer should be applied on hectares, and the N, P and K fertilizers should be properly matched. The medium fertility block should be applied with 300 kg of urea and 150 kg of phosphate per hectare. Diammonium, 100 kg of potassium sulfate plus 10 kg of zinc sulfate. In the fertilization method, stratified and divided fertilization methods were adopted. 20% of N fertilizer was used as base fertilizer, 10% as seed fertilizer, and 70% as top dressing. 85% of the P and K fertilizers were used as base fertilizer and 15% as seed fertilizer.
3 seed coating technology, seed selection, do a good job after germination test, drying seed, drying 2-3 days after the seed coating. The main use of seed coating agents is: 7.3% Ke-Pentazole, Jinon 3, Jinon 4 and other corn pest control smut and seedlings underground pests.
(4) The comprehensive prevention and control technology of corn borer adopts seal mulching: before corn mashing and phlegm removing, corn and sorghum stalks and sorghum should be sprayed with 75-100 g of Beauveria bassiana per cubic meter; the adults and eggs in the field shall be controlled with high-pressure mercury. Lights to kill, turn on lights in late June, turn off lights in mid-July, turn off lights at 8:30 in the evening and 4 in the morning; use adult sex attractants to prevent and control at the peak of adult corn; The Beauveria bassiana granules were sprayed or sprayed with BT emulsion water to destroy the corn borer larvae before the third instar.
5 The unified anti-rodent technology in farmland When the density of farmland rats exceeds 5%, the use of bromadiolone, sodium salt of enemy mouse, and warfarin are mainly used for timely prevention and control.
(6) Promoting early maturing techniques using precocious ripening techniques, such as dressing fertilizers outside the roots, emaphoresizing the leaves, putting autumn ridges, drying the ridges of the standing poles, etc.
7 Corn Daxie double row plastic film covering technology.
The large-scale corn mulch double-film mulching cultivation technology can increase temperature, reduce soil moisture and loss, improve soil physical and chemical properties, and promote soil nutrient balance supply. It is an important measure to resist drought and win high yields, and has a good social economy. benefit.
8 timely harvest. Ears can be harvested after they are hardened. The general harvest period is from late September to early October.
UV Fused Silica or Calcium Fluoride (CaF2) substrates are also available for additional performance in the Ultraviolet (UV) or Infrared (IR) spectrums. UF Fused Silica Double-Convex Lenses are ideal for close conjugate imaging systems utilizing Ultraviolet (UV) illumination. Calcium Fluoride (CaF2) offers a very wide transmission range of 350nm - 7μm.
Double-Convex (DCX) Lenses have two outward curved surfaces, a positive focal length and are useful for 1:1 imaging and in multi-element systems.
Worldhawk can supply high precision Plano Convex Lens, Double Convex Lens , Plano Concave Lens, Double Concave Lens, Meniscus Lens , Achromatic Lens and Aspheric Lens.
1. The main varieties promoted According to the climatic characteristics of the city's low temperature and drought in spring, high-yield and high-quality maize varieties with strong drought resistance and low temperature tolerance are selected, such as Xianyu 335, Jidan 535 and Zhengdan 958.