The well-known leaf of plants is an important "tool" for its metabolism. For an important organ of organic nutrients, about 90% of the plant's own material is produced through the photosynthesis of the leaves. In the actual production process, the plants are The establishment of crop repair, cultivation mode, and reasonable fertilization are carefully determined by the size of the leaf area, and the area of ​​the leaves is an important basis. In addition, leaf area is a key indicator of plant growth and fruit development. Therefore, the determination of leaf area has important significance for actual growth. It is feasible to measure the leaf width by using the leaf area meter to determine the grape leaves to study different cultivar years.
At present, domestic and foreign reports on regression analysis of grape leaf area have been reported. However, most of them are regression equations for a variety, and the suitable range is relatively narrow, and it is also cumbersome to apply. Based on known research results, the leaf area of ​​a single grape vine was estimated using the product of leaf length, leaf width, leaf length, and leaf width. The linear regression model built with the product of leaf length and leaf width as the correlation factor was used to accurately estimate the leaf area. Reliable, but practical application is more laborious. The relationship between the leaf width and the leaf area was used as a correlative factor. The regression equations established respectively had a very significant correlation, and most of the indices of the regression equation established by Ye Kuang were superior to the regression equation established by Ye Chang. Use the leaf area meter with faster speeds.
Different wine grape varieties (leaf shapes) with a narrow range of leaf widths (10.6 to 20.2 cm) can be used to estimate leaf area using a linear regression equation that is significantly correlated and well-fitted. Different ages (4 locations), different management conditions, different varieties (Cabernet, Merlot, Alcabus, Cabernet Franc, Rose, Red Globe, Jingxiu, Kyoho) Nine samples with a wide range (7.5~23.4cm) can not establish a significant and well-adapted linear regression equation for leaf width and leaf area. Three leaf width ranges are linearly related to the corresponding leaf area. The area measuring instrument was used to measure the statistical analysis, and the linear regression equation of leaf width and leaf area was calculated, and the significance test was performed on the regression equation. The results showed that the regression equations with different leaf widths showed a significant linear correlation. The direct measurement by the leaf area measurement instrument had no damage to the plant's advantage when the plant leaves did not leave the plant, which was a good reality for the experimental study. Sex.
All of the Case parts we provide is replacement parts with high quality, and main of them are agriculture and construction machinery parts, like for tractors, excavators, different type of loaders, forklifts and so on. Case is a giant company who supply a wide range of machines to the world, and they cooperate with Cummins, Mitsubishi, Yanmar, Iveco for their power plant. So we can offer lots of Engine Parts for Case equipments. Except for these parts, we could also supply lamps for Case which are used for backhoe loader, like 570, 580, 590 series.
Case Ih Aftermarket Parts,Case Ih Parts,Aftermarket Ih Tractor Parts,Case Ih Parts Dealers
Hangzhou Holdwell Mechanical&Electrical Co.,LTD , http://www.holdwellparts.com