Observations on the appearance of shoots Most of the year's branches were thick with bright luster, and the smaller the "tearness" of the shoots, the more nutrients the shoots had stored; the larger the "sharpness", the hairy shoots at the tip of the shoots. The body is small and thin, indicating that the less nutrients are stored.
The bending comparison method of the branches showed that the development branches of the periphery of the tree were bent and compared. The curvature was at the apex, indicating that the branches stored more nutrients; the lower the curved branches, the less nutrients were stored, even though the branches were thick and numbered. Much, it does not indicate that there are many nutrients stored.
Hand-feeling observation methods use pruning shears to cut short branches with the same thickness and branches. When trimming, the hardness of the branches is felt to be large and laborious. The xylem is white and thick and the pith is small and full, indicating that the branches store more nutrients and the tree vigor is stronger; The pruning feels soft and effortless. The xylem is green, thin, and the pith is large and soft, indicating that the branches have less nutrients stored and the tree vigor is weaker.
The flower bud method was used to observe the amount of flower buds in the entire tree body. About 50% of the buds were flower buds, and the flower buds were full and full, the scales were smooth, tightly packaged, shiny and deep in color, and they had a tight feeling in the hand, indicating that the tree stores more nutrients. The tree vigor is strong; otherwise, the flower buds are either too much or too little, bulky, fuzzy, and the scales are shiny but light in color, indicating that the tree stores less nutrients and the tree vigor is weaker.
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