In terms of the annual phenological period of litchi, bud differentiation usually occurs from November to January of the following year. At this time, litchi is required to promote flowering. The main purpose is to enhance the nutrition of the tree before flowering, promote the differentiation of flower buds, form robust flower spikes, and increase fruit setting. Fertilizer fertilization usually takes 10-20 days before flower bud differentiation.
The flower buds differentiated from the glutinous hibiscus in Dongguan County of Guangdong from December 15th to January 5th. Therefore, the promotion of flowering should be applied from November 25 to December 25; in Fuzhou City, Fujian Province, the "flowery red" lychee begins to differentiate from October 11 to November 20, and the flowering fertilizer should arrive on October 22. It was applied on November 10; the litchi of "Lanzhu" in Luzhou City was the flower bud differentiation time from mid-October to mid-February. Because different varieties and different regions are difficult to grasp the flower bud differentiation period, so early precocious species should be in early January before and after Osmaki, late mature species should be in late January before and after the cold to promote flower fat. Types of fertilizers Delayed fertilizers are compatible with quick-acting fertilizers, farmyard fertilizers and chemical fertilizers. Usually, 50 to 100 kg of excrement and urine are applied to each plant, and 0.25 to 0.5 kg of nitrogen fertilizer is applied.
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