Application of leaf area meter in determination of strawberry leaf area
The leaves are the main organs of plants for photosynthetic, transpiration and respiration. The growth and development of the leaves are related to the growth and development of the plants! Especially the size of the anterior leaf area of ​​the strawberry has a great influence on the yield and fruit quality of the plants. A simple strawberry leaf area determination method will provide basis for strawberry production management methods. The current modernization method is the use of leaf area meters, but since most production units are limited by the conditions of funds and equipment, it is not yet possible to achieve transparent use. Checking the leaf area by the grid method or the weighing method often requires the removal of the leaves! The inconvenience at the site is also not conducive to the continuous dynamic observation. The method for the simple determination of leaf area of ​​other fruit tree species has been reported. The method of simple determination of strawberry leaf area has not yet seen the data. For this purpose, the transparent square method was used as a control method to compare leaf length and leaf area regression methods, such as leaf length and leaf area regression method, leaf width and leaf area regression method. method.
The experiment was set up in the greenhouse of the Henan Hi-tech Park of Henan Province. The soil was sandy loam and the species was Tudela, Ghost Null, and Dukla. During the opening of the first inflorescence center flower, normal developing plants were selected, and all leaflets of the three compound leaves were measured using a leaf area meter, and each variety had not less than 30 leaves. Random sampling (10 leaves each time) was repeated 3 times, and the leaf volume product measured by the transparent grid method was taken as the standard, and the paired data mean difference was calculated by the coefficient method and the correlation regression method. Significant test. The difference is not significant, and the smallest value is the best method for determining leaf mass.
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 determination method of leaf area of ​​D. edulis, the leaf-to-product difference between the average leaf product and the transparent grid method using leaf length x leaf width coefficient method was the smallest, only 0.53%, but the error of t value was Large, and more laborious when measured, so it is still recommended to use leaf width and leaf and product regression method, the calculation formula for the evening = a + bx = 6.6393x-10.6411. The leaf area meter is still the simplest and most convenient measuring instrument.
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