Foliar fertilization is suitable for the growth season of kiwifruit, which has the advantages of economical fertilizer application, rapid effect, and improved fruit quality.
During the fertilization period, the demand for nutrient elements is different in different periods of the annual growth cycle of kiwifruit. Kiwifruit can be sprayed with foliar fertilizer before it germinates to the fallen leaves. Spraying fertilizer during fruit ripening can promote fruit ripening and improve fruit quality. The optimum temperature for foliar fertilization is 18℃～25℃, and the fertilization time should be before 10am and 4pm on cloudy or sunny days.
Spraying methods Different elements have different absorption levels in the kiwi tree. Nitrogen and potassium can be sprayed on the leaves of the whole plant. Phosphorus should be sprayed comprehensively. Iron, zinc and boron should be sprayed directly on the desired organs. Pay attention to spraying Correspondence. For some elements that absorb slowly, appropriate buffering aids should be added to adjust the PH value and improve the application effect. The concentration of foliar fertilization should be selected according to the age of the plant and the type of fertilizer and the number of applications. Reasonable foliar top dressing can promote the inflorescence differentiation, improve the disease resistance of the tree, promote fruit ripening, increase fruit setting rate, improve fruit quality, extend leaf life and other advantages.
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