The unevenness of the fruit surface is often a physiological disease. Physiological diseases are generally caused by the lack of nutrients. For example, the lack of boron may cause such pits and pits on the surface of fruits. For boron-deficient fruit trees, boron fertilizer can be applied before flowering in autumn or spring. The amount of fertilizer varies depending on the size of the tree, and the amount can not be too much. Water is applied promptly after fertilization to prevent the occurrence of fertilizer damage. In addition to this, it can also be sprayed out of the roots. Before flowering, the borax solution is sprayed once at the flowering stage and after flowering. The concentration should not be too high. In addition, the strong alkaline soil borax is easily fixed by calcium, and it is better to use extra-root spray.
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