The leaves are the material basis for photosynthesis of plants, the medium for transpiration, and the main organs for the synthesis of organic matter. Therefore, in the process of plant growth and development, the leaf has the most obvious influence on it. From a scientific point of view, if the growth of cotton is good, it is not that the more leaves, the better, but it should be controlled within a reasonable range. And this important measure is the leaf area index. Using the leaf area meter to quickly determine the leaf area of ​​a plant, and calculating the leaf area index is one of the most reliable and convenient methods for obtaining the plant leaf area index.
Taking cotton cultivation as an example, the leaf area is one of the indicators to measure the growth and development of cotton and whether the population structure is reasonable. Accurately determining the cotton leaf area is extremely important for improving the yield and quality of cotton cultivation. However, because the cotton leaves are palmately divided, the number of lobes and the depth of the rips vary depending on the species and the habitat of the leaves, so it is relatively cumbersome to accurately determine the cotton leaf area. In order to improve efficiency and accuracy, we have developed a leaf area meter that specializes in determining the leaf area of ​​plants and applies it to cotton leaf area index monitoring, which will certainly provide convenience and technical support for the effective development of these works.
According to the leaf area index, it can reflect whether the cotton canopy structure is reasonable, whether the vegetative growth and reproductive growth are coordinated and their fertility processes, etc. However, the standard leaf area index required by cotton is different in different growth stages of cotton. Therefore, the measurement of cotton leaf area index is not a single measurement, but needs to be measured, analyzed and studied according to actual needs. That is, cotton leaf area index monitoring must be conducted. At this time, a simple, fast, accurate, and easy-to-use method is needed. The leaf area determination method is very important, and the application of leaf area meter in cotton leaf area index monitoring just meets the demand and can provide an important reference for the scientific cultivation of cotton and further guide cotton farmers to do field management work for cotton. The harvest will increase production and lay a good foundation.
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