Leaf area meter method and coefficient method to measure the more rapid leaves are the main photosynthetic organs of plants, and also the main way to carry out transpiration. The size of their area for their own growth and development, light energy utilization, dry matter accumulation, yield and economic benefits Have a significant impact. By understanding the leaf area, we can help us to further understand the plant growth pattern, population light and efficacy, and provide a good basis for the establishment of a good plant cultivation program. The measurement of leaf area is not a further analysis of the plant. In the absence of steps, there are leaf area measurements, hand-held leaf area meters, coefficient methods, etc. Which of these two measurements is faster?
Handheld leaf area meter because of its convenient operation, also known as portable leaf area meter, use it to measure the leaf area method is: the leaf to be tested into the instrument's scanning area, press the confirmation key can be The leaf area of ​​the blade to be tested is obtained. After the measurement is completed, the measurement result can be viewed on the instrument. At the same time, the data can be uploaded to the computer for us to view. This measurement method is rapid in measuring the leaf area of ​​a plant within a small area, but there is a certain deviation in the measurement of a large leaf area, and the measurement speed is also reduced.
The coefficient method is also called the regression equation method. The greatest difficulty in this measurement method is the correlation coefficient between leaf length, leaf width and leaf area. After understanding the correlation coefficient, the coefficient is brought into y=ax+b. In the equations, calculations are performed. Measurements using this method are more suitable for measuring the leaf area in a large area. If a small-area pressure meter is used, the speed will be relatively slow, and it may affect the coefficient. The accuracy or not.
The two measurement methods, measurement accuracy and rapidity should be determined from the area of ​​the measurement of the leaf, and the portable leaf area meter method has relatively accurate and extensive determination of the leaf area within a small area. However, the coefficient method is more suitable for the determination of leaf area within a large area, enabling rapid and accurate measurements.
Handheld leaf area meter because of its convenient operation, also known as portable leaf area meter, use it to measure the leaf area method is: the leaf to be tested into the instrument's scanning area, press the confirmation key can be The leaf area of ​​the blade to be tested is obtained. After the measurement is completed, the measurement result can be viewed on the instrument. At the same time, the data can be uploaded to the computer for us to view. This measurement method is rapid in measuring the leaf area of ​​a plant within a small area, but there is a certain deviation in the measurement of a large leaf area, and the measurement speed is also reduced.
The coefficient method is also called the regression equation method. The greatest difficulty in this measurement method is the correlation coefficient between leaf length, leaf width and leaf area. After understanding the correlation coefficient, the coefficient is brought into y=ax+b. In the equations, calculations are performed. Measurements using this method are more suitable for measuring the leaf area in a large area. If a small-area pressure meter is used, the speed will be relatively slow, and it may affect the coefficient. The accuracy or not.
The two measurement methods, measurement accuracy and rapidity should be determined from the area of ​​the measurement of the leaf, and the portable leaf area meter method has relatively accurate and extensive determination of the leaf area within a small area. However, the coefficient method is more suitable for the determination of leaf area within a large area, enabling rapid and accurate measurements.