Watermelon crazy should pay attention to the following points:
1. Balance the application of phosphorus and potassium fertilizers, increase the application of organic fertilizers, and avoid partial application of nitrogen fertilizers, which can effectively reduce the phenomenon of watermelon madness. Strengthen the ventilation of the greenhouse, reduce the humidity in the field, increase the illuminance, and promote the growth of watermelon. Linyi Fertilizer Network Copyright
2, watermelon flower bud differentiation period sprayed to promote Huawang No. 3, forcing the top of the vigorous growth of a large number of nutrients, inhibiting the main shoots mad, and promote flower bud differentiation. And when the female flower is open, the female flower is sprained in the first 3-5 sections of the stem, which can effectively control the prolongation and increase the fruit set rate during flowering. Linyi Fertilizer Network Copyright
3, found that the watermelon stems high tilt phenomenon, you need to dig a deep vine groove on the ground near the tip of the stem, press the tender stem into the groove, let the stem tip exposed to the vine groove 5~10 cm, can be effectively controlled The top advantage is to suppress the length of the melon. Linyi Fertilizer Network Copyright
Total 1 | <First <Prev 1 Next> Last> |
share to:
Right Angle Prisms
Right Angle Prisms are used to direct beams at 90 degrees by using hypotenuse face in total internal reflection (TIR). The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads, because they are easier to mount, and deform much less than mirror in response to external mechanical stress. As long as acceptance angle limitations for TIR from the roof faces are not exceeded, the right angle prisms can serve as a retro reflector, turning beams back to the original direction.
Available in sizes ranging from 3 mm to 60 mm, Right-Angle Prisms can be used to deviate a light path by 90° or 180°, depending on which surface is used as the input for the light source.
Right angle prisms are used to redirect light beams at 90 degrees. Right angle prisms are made of BK7, UVFS optical materials.
-
45-45-90 degree prisms
-
Can be used as internal or external reflectors or as retro - reflector
Right-angle prism is the most common type of prisms. It is used to re-direct a beam of light at 90 degrees from the the incident direction or used as a 180 beam retro-reflector. They are often coated with various optical coatings to form cubic beam splitters and color separation cubes used in various projection systems.
Right Angle Prisms,K9 Glass Right Angle Prisms,Sapphire Right Angle Prism Mirror,Znse Right Angle Prism
Changchun Ruiqi Optoelectronics Co.,Ltd , https://www.ruiqi-optics.com