Nanfeng oranges enter the peak period of picking, after the completion of fruit picking, it is necessary to apply fast-acting water-soluble fertilizer in time to achieve the purpose of restoring the tree momentum.
Post-fruit fertilizer refers to the quick-acting fertilizer that is applied in time to restore the tree momentum (leaves re-green) and prevent the old flakes from falling off prematurely within 7 days after picking the fruit. The time is generally in November, the fertilizer should use high nitrogen or balanced full water soluble compound fertilizer, depending on the tree condition can also add an appropriate amount of urea.
Winter fertilizer is mainly based on organic fertilizer + trace elements + long-term compound fertilizer burial, and is applied years ago or years later. For citrus early ripening varieties (such as Nanfeng mandarin orange), the interval between post-fruit fertilizer and winter fertilizer is longer.
As far as Nanfeng mandarin oranges, especially trees with excessive fruit hanging, post-fruit fertilizer is very important for leaf re-greening, and promotes the differentiation of flower buds in winter branches. Nanfeng honey orange fruit after fertilizer to meet the principle of high nitrogen, fast water solubility, timely demand.
In the following figure, the fruit trees are fertilized after fruit to achieve the status quo of severe magnesium deficiency in the supplementary tree.