A photosynthetically active radiometer is a portion of spectral energy, ie, photosynthetically active radiation, capable of measuring the chlorophyll molecules in an excited state in solar radiation absorbed by a plant during photosynthesis. The definition of photosynthetically active radiation can be defined from three primary application disciplines: atmospheric science, ecology, and resource science and technology. In the atmospheric sciences, photosynthetically active radiation refers to the radiant energy of certain wavelengths that can be absorbed and transformed by the chloroplast pigments of green plants and used to synthesize organic substances in the solar radiation spectrum; from an ecological point of view, it refers to the solar radiation spectrum. It can be absorbed by the chloroplast pigments of green plants and converted to radiant energy in the 400-700 nm band for the synthesis of organic substances. It is defined in the resource science and technology as the solar radiation spectrum can be absorbed by the chloroplast pigments of green plants, transformed and used Synthetic organic matter has a certain band of radiant energy. The photosynthetically active radiation has a wavelength of about 400 to 700 nanometers and is represented by the symbol Qp in units of watts/meter2. Photosynthetically active radiation is the source of energy for plant life activities, organic matter synthesis, and yield formation. What effect does photosynthetically active radiation have on photosynthesis in plants? Take corn as an example. The amount of photosynthetically active radiation (PAR) within the corn canopy directly affects the photosynthesis of the leaves within the canopy, which in turn affects the accurate assessment of the corn's net primary productivity or crop yield. Related expert experiments have shown that photosynthetic efficiency in maize canopy is effective. The distribution and effect factors of radiation on the vertical distribution characteristics of photosynthetically active radiation in corn canopy and its influence factors were analyzed. The results showed that the PAR distribution of different vertical leaf layers in maize canopy was significantly changed with the growth period, and significantly negatively correlated with the leaf area index (R2 = 0.89). The K value of the photosynthetic effective radiation of maize canopy showed a K value during the growth period. The dynamic change is about 0.76, and the performance is larger at the seedling stage and smaller at the late reproductive stage. Each step in photosynthesis is important for the growth and development of the plant, and the effect of photosynthetically active radiation on photosynthesis is also important. The research and development of photosynthetically active radiometers is a milestone in the measurement of photosynthetically active radiation. It has a series of functional features, Xiao Bian is not mentioned here one by one, laid a professional market for measuring photosynthetic active radiation instruments.
Sodium hydroxid,with the chemical formula NaOH, is commonly known as caustic soda. It is a strong alkali with strong corrosivity, generally in the form of flakes,pearls or lumps.Industrial grade Caustic Soda contains a small amount of sodium chloride and sodium carbonate, and is white translucent crystal.Its aqueous solution has an astringent and creamy feel.Sodium hydroxide is prone to deliquescent in the air, so solid sodium hydroxide is often used as a desiccant.It is very soluble in water and emits a lot of heat when dissolved. It`s also soluble in ethanol and glycerin.
Sodium hydroxide (NaOH) is extremely versatile. Used in the production of paper, soap, dyes, rayon, metal smelting, petroleum refining, cotton fabric finishing, coal tar product purification, and food processing, wood processing and machinery industries.
The product is a strongly alkaline substance which belong to 8 grade dangerous goods. with strongly irritating and corrosive, dust or smoke can irritate the eyes and respiratory tract, corrode the nasal septum, direct contact between the skin and eyes and NaOH can cause burns, and misuse can cause digestive tract burns, mucosal erosion, bleeding and shock.So it`s highly corrosive and requires the "corrosive item" mark.
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The market prospect of photosynthetic effective radiometer