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Randomly cut about 35 leaves of the normal plant age and size of the above six strawberry varieties, measure the length (L, the distance from the base to the tip of the petiole) and the width of all three leaflets of the strawberry by a ruler. (W, the maximum width perpendicular to the main vein); measuring the leaf area with a leaf area meter; inputting the measurement data into a computer, using DPS data analysis software to perform a regression analysis of the length, width and leaf area of ​​the strawberry, and establishing an independent regression of the strawberry varieties. Based on the existing data, the length, width and leaf area of ​​six strawberry cultivars were integrated and analyzed to establish a universal regression equation. In addition, 10 normal leaves of different sizes and leaf ages were taken from each variety. At the same time, the length and width were measured with a ruler, and the area was measured with a leaf area meter for the reliability test of each regression equation.
In order to ensure the health of the plant, the need for living measurements is growing. In vivo measurements include leaf area meter measurement, CAD graphic analysis and regression analysis. The leaf area meter has fast measurement speed and easy operation. However, the leaf area meter has a high price, which limits its popularization in leaf area measurement. .
Leaf area instrument for the study of strawberry leaf area in southern China
Leaf is an important organ of fruit trees. The size of strawberry leaf is the key to the formation of fruit yield and quality of strawberry. Therefore, establishing a reasonable and accurate leaf area determination method has certain guiding significance for strawberry cultivation mode and cultivation management. Under the control of genetic factors, the leaf morphological characteristics of each fruit tree have relative identity and stability. Although the same species of fruit trees are at different physiological ages or in different parts of the crown, or under different management levels. The area size is quite different, but the basic shape of the leaves is relatively close, which provides a basis for the regression calculation of leaf area. The leaf area meter is the main instrument for measuring the plant leaf area.