I. Accumulation of leaf area is only accurate, but the efficiency is low. It can only measure an area of ​​less than 300 square centimeters at a time. It should only be used when there are few samples of sidelobe, small leaf area, and high precision. .
2. Using the copy blade shape weighing method to determine the side, fast and accurate, but the procedure is cumbersome, only applies to the sample less
3. Calculate the length (L) and the maximum width (W) of the blade. Calculate the area of ​​each leaf according to the formula A (area) = LxWx0.75. Accurate, rapid, and able to measure a large amount of samples, but it cannot be lateralized. Simplify the unexpanded leaves.
4. The length and width of every other leaf on the plant, calculate the area of ​​these leaves according to A=LxWx0.75, and multiply the area by 2 to calculate the leaf area per plant. The ergonomics is doubled compared to method 3, but it can only be determined side by side. Fully-expanded leaves. Multiplying the sum of the lengths of all the leaves on a plant with a coefficient of 6.67, find the leaf area of ​​the plant (Moskov method), quickly and efficiently, but the lateral area of ​​the leaf area is high, and the wells have far method 3 and method 4 Defects.
We determined the leaf area dynamics of single crosses 701, 702, and 703, respectively, using the above-mentioned methods, after seedlings of corn, once a week, with an average of 5 plants each time. The results measured by methods 2, 3, and 4 are the same, which shows that several methods in the distant future can measure the leaf area more accurately and objectively. However, various methods are simple, complex, fast, slow, and have different scope of application. They can be selected according to different research purposes and actual conditions.
Through comparison and analysis of the above methods, it can be found that the fastest, most scientific and accurate method for measuring the leaf area is to use a leaf area meter to measure, so as not to damage the plant's leaves, but also to avoid a variety of tedious Complex steps.
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