The wax fertilizer is a fertilizer applied before or during the overwintering period of rapeseed. At this time, the roots and leaves of the rape continue to grow, and the spindle inflorescence has begun to flower bud differentiation, and the branches and buds have mostly developed before the bolting. Therefore, the nutritional conditions at this time are not only related to the development of the root system, the growth of new leaves, but also affect the number of primary branches and the number of buds. In the case of insufficient seedlings and poor seedling growth, wax must be applied. General fields such as fertilizers and fertilizers can be used.
The wax fertilizer is dominated by organic fertilizers. The fertilization time should be before the wintering and the beginning of the overwintering period. In time and time, it is generally applied from mid-late December to early January. The general field block can be mixed with soil ash and earthworm roots to improve soil temperature, warmth and antifreeze. For some of the three types of seedlings under the premise of organic fertilizer, appropriate increase in available nitrogen fertilizer to enhance seedlings to promote balanced growth, but the number should not be too high, so as not to grow too tender and suffer freezing injury. When applying fertilizer, it can be combined with the application of phosphorus and potassium fertilizers. If drought is encountered, drought should be promptly applied to exert its fertility.
The dichroic mirror (color separation filter) can be used to isolate a specific range of the visible spectrum, a small amount of color used in the addition and photocopier in the color balance.
The type of filters in the incident beam can be divided into two or more beam applications also play a big role.
Its main feature is that the size can be made quite large. Thin film filters generally transmit longer wavelengths and are mostly used as infrared filters. The latter is to form a certain thickness of high refractive index or low refractive index metal-dielectric-metal film or all-dielectric film alternately on a certain substrate by vacuum coating, forming a low-order, multi-stage tandem solid method Brie-Perot interferometer. The choice of film material, thickness and connection mode is determined by the required center wavelength and transmission bandwidth λ.
Optical Filters are used to selectively transmit or reject a wavelength or range of wavelengths. Optical Filters are used in applications such as fluorescence microscopy, clinical chemistry, spectroscopy, or machine vision inspection. Optical Filters are ideal for life science, imaging, industrial, or defense industries.
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