Comparison of Leaf Area Measuring Instrument and Other Methods for Determining Strawberry Leaf Area
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The current modernization method is the use of leaf area measuring instruments, but because most production units are limited by conditions such as funds and equipment, they cannot be achieved. The use of transparent grid method or weighing method to measure the leaf product often requires the removal of the leaves, which is inconvenient at the site and is not conducive to continuous dynamic observation. Methods for the simple determination of leaves from other fruit tree species have been reported. However, the methods for the simple determination of leaves in grasshoppers have not been available. If there are conditions, it is recommended to use the leaf area measuring instrument because the measuring method of the instrument is simple and accurate, which can reduce a lot of measurement work.
In the determination method of the leaves of T. durana, the leaf width and leaf product regression method is more accurate, and its calculation formula is eve=a+bx=7.0918x-13.4784. Using the same method of discussion as in Tudela, the results of the leaves and the plots of ghosts, anger, and anger are also more accurate with the leaf width and the leaf-product regression method. The formula is a=a+bx-7.3187x-14.3288. In the method for determination of D. officinalis leaves, the leaf-to-product difference between the average leaf product and the transparent grid method using leaf length x leaf width coefficient method is the smallest, only 0.53%, but the error of t value Larger, and more labor-intensive measurements, it is still recommended to use leaf width and leaf product regression method. In order to improve the accuracy of regression calculations, when using the regression formulas of the varieties recommended in this paper, there must be a larger sample size (not less than 30), which can reduce the statistical error. The measurement of the leaf area measuring instrument is also very accurate and does not require so many cumbersome steps, which is the trend of modern agricultural development.