Fruit tree pruning has a local promotion and inhibition of the whole, called double effect. The local promotion is due to the removal of a certain number of branches and buds, changing the original nutrient distribution relationship, making nutrients and water supply to the remaining shoots, improving the photosynthetic efficiency of the leaves, and making the local branches and buds nutritional status. Better, thus promoting local growth.
The overall inhibition is due to the reduction of total shoot shoots and the corresponding reduction in leaf area after pruning, which affects the accumulation of nutrients, and at the same time it also consumes some of the nutrients and moisture in the healing of wounds after cutting. Both the growth of the roots and the growth of the roots are weakened, which ultimately leads to a natural decrease in total tree growth.
The influence of the above-mentioned dual roles is simultaneous and inseparable. The greater the effect of pruning on local promotion, the more pronounced the overall weakening effect. Therefore, in pruning, the degree of pruning and the amount of total pruning should be mastered. Do not pull or cut too much, or the tree vigor is unstable.
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