Rice locust field tube plus spray control

(1) Pay attention to clear the weeds in the field and the ground, especially the weeding in summer and autumn, which plays an important role in alleviating the damage of the late rice aphids. (2) Strengthen rice paddy management so that rice can be headed, flowered, grouted and matured in time to reduce damage. (3) The rate of sorghum in late rice is 10%-15%. When there are more than 5 mites in each plant, spray 40% of Le Dai emulsifiable concentrate 1000 times or 80% dichlorvos 1200 times solution and 2.5% of emulsifiable concentrate 2500 times. Liquid, 65% wormworm WP 1500 times solution, 10% imidacloprid WP 2000 times solution.

Plane Ruled Grating

Plane ruled gratings are characterized by a superior efficiency at their design wavelength compared with holographic gratings. Plane Ruled gratings comprise the majority of diffraction gratings used in spectroscopic instrumentation and are especially useful in systems requiring high resolution.

China star optics can provide customers with a variety of replicated grating products such as diffraction gratings, reflective gratings,holographic gratings,concave gratings etc. to meet different needs. Maximum ruled area is up to 300 x 300 mm for plane ruled diffraction gratings. For replicated diffraction and transmission gratings the ruling density can be from 20 grooves per millimeter to 2400 grooves per millimeter, wavelength from 0.2 micron to 25 microns.

Holographic gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-0.8um
Grooves per mm: 1,200 to 3,600L/mm
Diffraction: >70%
Ruled gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-15um
Grooves per mm: 50 to 2,400L/mm
Diffraction: >70%
Concave gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 200 to 900um
Grooves per mm: 490 to 1,200L/mm
Diffraction: >70%

Plane Ruled Grating,Plane Ruled Diffraction Grating,Plane Reflection Grating,Plane Ruled Reflective Grating

China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com