Leaf area measuring instrumentIt is increasingly widely used in modern agriculture, butLeaf area measuring instrumentWhat are the benefits of comparing traditional methods? Below, the Hengmei Technology editor will take you to understand:

Many people ask why it is necessary to measure leaf area? And how to calculate the total area of green leaves for a plant with so many leaves? Before that, we first need to understand the Leaf Area Index, which refers to the ratio of the total area of crop leaves on a piece of land to the land occupied. The calculation formula is: total green leaf area/land occupied area. The total area of green leaves is calculated by measuring the single leaf area and individual leaf area, and then based on the number of crops per unit land area. We all know that the size of leaf area directly affects the absorption of sunlight by plants for photosynthesis, thereby affecting the growth status of plants.

At present, the main methods for measuring leaf area areLeaf area measuring instrumentMethod, punching and weighing method, grid method, image pixel method, Paper Cuttings weighing method, correlation coefficient measurement method, regression equation method, etc. Below, the editor will analyze the differences and compare the advantages and disadvantages of these methods one by one.

① The grid method is labor-intensive, time-consuming, and has significant errors when the blade edges are complex;

② The punching measurement method has a certain degree of damage to plant leaves, and it is difficult to punch holes for small leaves and leaves with thick leaf veins, making it less applicable in practice;

③ The correlation coefficient determination method and regression equation method require complex mathematical modeling for area measurement, and the degree is relatively low. They can only be measured for a certain type of plant and cannot be universally used between varieties and species. They are rarely used in practical operations;

④ The Paper Cuttings weighing method is simple and convenient to operate, and does not need special instruments;

⑤ Image pixels have the advantages of simple and rapid measurement, batch measurement, and are not affected by factors such as blade size and thickness;

⑥Leaf area meterThe measurement method uses a live leaf area measuring instrument for measurement, which has high accuracy, small error, simplicity, convenience, and can achieve non-destructive measurement of leaves without damaging them. It has been widely used now.