There is a great relationship between grapefruit leaf area index and yield quality. The measurement of leaf area is also a common research object in production and scientific research. There are many ways to determine the area of ​​fruit and leaf, but only the regression equation method is the easiest, quickest and most accurate. . Previous studies on leaf area formulas using regression analysis in other fruit trees have been extensive, but there have been no reports on grapefruit. Because pomelo is relatively large due to its large blade size, it is more difficult to determine its leaf area by other methods (other methods, either requiring leaf extraction, or expensive instruments, or poor accuracy), so we made the following discussion. The leaf area meter is currently the main instrument for measuring the leaf area of ​​plants, and it is also very convenient and effective.
The obtained leaf area formula was used to calculate the area of ​​28 true leaves and 28 wing blades of the two pomelos that were not used for regression analysis. Finally, the mean value of the measured areas of the true leaves and wings of the two pomelos was calculated. Measured errors and total area errors (errors between the sum of the actual area of ​​the 28 leaves and the sum of their calculated areas), and the significance of the difference between the mean value of the measured area and the mean value of the actual area obtained for each formula is determined by the group method. test.
It is completely feasible to estimate the leaf area using the leaf area instrument and the length and width of the wing. Calculate the area accuracy using the Long@wide leaf area regression formula. The leaf area of ​​hybrid pomelo and Shatian pomelo can be obtained using their common formula. Leaflets that are particularly small for the leaflets can be measured only by leaf area representing leaf area.
Add Wechat to give you more professional information: 
Hydraulic brake sheet metal shears
Hydraulic Brake Sheet Metal Shears,Hydraulic Guillotine Shearing Machine,Manual Sheet Metal Cutting Machine,Cnc Shearing Cutting Machine
Nanjing Lianpeng Machinery Technology Co., Ltd. , https://www.yrssk.com