Leaf Area Meter - Guarantee of Leaf Area Index
There are two types of leaf area meters: handheld leaf area meters and live leaf area meters. The handheld leaf area meter can be carried around, measured at any time, and can be directly measured without removing the blade. It relies on the instrument to measure the length and width of the blade using infrared sensitization, and then calculate the average area of ​​the blade. Therefore, the handheld leaf area meter has requirements for the length and width of the blade. If the blade area is too large, it cannot be measured. The living leaf area meter is different, it is to measure the leaf on the photosensitive plate, no matter how big the leaf, can be measured. If the area of ​​the blade exceeds the plate, the blade can be cut first, then each blade can be measured separately, and then calculated.
The leaf area index is a sign of the degree of greenness on the ground. It is the ratio of the total area of ​​the leaves of all crops on the ground to the floor space. Its formula can be expressed as: leaf area index (LAI) = total area of ​​green leaf/footprint. The leaf area index is usually related to the yield of crops. In general, the larger the leaf area index, the stronger the photosynthesis of the plants, the better the crop growth status and the higher the yield. Therefore, in agriculture, the leaf area index is an important one. parameter.
There are many methods for determining the leaf area index, such as the number grid method, digital camera and auto CAD software method, living leaf area meter method, drawing paper weighing method and so on. Among them, the live leaf area determination method is the most simple and accurate. The live leaf area meter uses a live leaf area meter. It is an instrument that can measure any kind of blade, and the measurement speed can reach 1 second. The measurement resolution is 0.1mm and the measurement accuracy is 2%. Such a high-performance living leaf area meter is rare in the industry. At the same time, Zhejiang Tops company's live leaf area meter is very scalable, with a wireless communication interface and GPS positioning interface, according to user needs for hardware expansion, to achieve remote transmission of spectral data and GPS positioning navigation.
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