The role of leaves is very powerful, and it is also an important nutrient transpiration organ of fruit trees. Its size affects the photosynthesis of plants, the growth and development of fruit trees, but also to determine the fruit tree cultivation mode, orthopedics pruning, fertilization programs, and orchard population analysis One of the important basis for such aspects. The leaf area meter can be used for effective measurement of the leaf area. Scan WeChat, we met with hate: Nickel-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent corrosion resistance, high temperature strength, and good weldability. These alloys are typically composed of nickel as the base metal, with various alloying elements added to enhance specific properties. Inconel Powder,Nickel Powder,Pta Welding Ni Alloy Powder,Laser Cladding Ni Base Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcmetalpowder.com
There are many methods for measuring the leaf area, such as the quadrature instrument method, the leaf pattern method, the leaf area instrument method, the grid method, the weighing method, and the graphic decomposition method. Due to limitations in equipment, test precision, and time, etc., There is a great inconvenience in practical applications. The use of regression equation method to determine the area of ​​fruit leaves, has the advantages of simple, fast, and not to hurt the blade. In addition, the popularity of computing tools has been increasingly valued by people. Because there are certain differences in the leaf shapes of different tree species and breeds, the regression method cannot be used universally between varieties and species. Therefore, the regression equations should be established for tree species and species.
The multiple correlation coefficients of leaf length, leaf width, and leaf area were greater than the correlation coefficients of leaf length and leaf area, leaf width, and leaf area, and the percentage difference between the leaf area value and the actual leaf area value calculated using the binary linear regression equation. Therefore, it is more accurate to calculate the leaf area of ​​Jinguangmeimei by the dual linear regression equation than using the linear regression equation. Because of the extremely significant positive correlation between leaf length and leaf area, leaf width and leaf area, leaf length and leaf width, and leaf area, the correlation coefficient and multiple correlation coefficient were 0.7084, 0.8546, and 0.9868, respectively, and the one-variable regression equation and binary The regression equations reach extremely significant levels, and all three regression equations can be used as regression equations to calculate the leaf area of ​​Jinguang apricot. In the specific application, it can be selected according to the required accuracy.
There are many ways to determine the leaf area. The leaf area meter is the most convenient method of measurement. Such methods as perforation weighing, dry weighting, fresh weighting, etc. are simple and easy to operate. The required equipment and equipment are simple, but it takes time and labor, and the accuracy and accuracy of the measurement results are low. The laser leaf area meter Law, photoelectricity leaf area meter method, digital image processing method, etc., have accurate measurement and good reproducibility, but the operation is relatively complicated and the operator's quality requirements are high, and the above methods all need to be measured in vitro, which is a destructive measurement; Although the accuracy of the grid paper method is high, non-in vitro measurement can be performed, but it takes time and labor. Therefore, these methods limit the scope of their use to a certain extent. The use of the regression equation method to calculate the leaf area is simple, fast, practical, and accurate and reliable. Therefore, it can be applied in production and scientific research. 
Some commonly used nickel-based alloy powders for PTAW include:
1. Inconel 625: This alloy powder is widely used for PTAW due to its high strength, excellent resistance to corrosion, and oxidation at elevated temperatures. It is commonly used in applications involving seawater, chemical processing, and aerospace industries.
2. Hastelloy X: This alloy powder is known for its high-temperature strength and oxidation resistance. It is commonly used in applications involving gas turbine engines, industrial furnace components, and chemical processing.
3. Monel 400: This alloy powder is known for its excellent resistance to corrosion, particularly in marine environments. It is commonly used in applications involving seawater, chemical processing, and oil refining.
4. Inconel 718: This alloy powder is known for its high strength, excellent resistance to corrosion, and good weldability. It is commonly used in applications involving aerospace, oil and gas, and nuclear industries.
5. Inconel 601: This alloy powder is known for its excellent resistance to high-temperature oxidation and corrosion. It is commonly used in applications involving heat treatment equipment, chemical processing, and power generation.
These nickel-based alloy powders can be used in PTAW processes to create high-quality welds with excellent mechanical properties and resistance to corrosion and high temperatures.
Determination of Fruit Leaf Size Leaf Area Meter