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Effective effect of spraying urea before falling leaves of fruit trees
The nutrients needed for spring fruiting, flowering, fruit setting and shoot growth in fruit trees are mainly nutrient supply stored in the tree body in the autumn of last year. Practice has proved that after apple, pear and other fruit trees are harvested, foliar spray of a certain concentration of urea solution has a good effect on improving the nutrient accumulation of the tree. In the spring of the second year of fruit trees, the growth of new shoots is prosperous, and the short branches of leaves are robust and leaves. Good color, neat flowering, high fruit setting rate. The concentration of foliar sprayed urea is generally 3-5%. Spraying time is generally from the end of October to mid-November. It is usually carried out 15 days before the defoliation of fruit trees, mainly on the back of the leaves. It is better to spray on weak trees, old trees, and large trees that produce more results.