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复肥、钾肥稀土微肥在荔枝上施用效应的三年结果表明:(1)施用含钾肥料能显著增产(幅度64.8～77.2％),钾与氮及氮磷钾配合使用增产和提高单果重效果更好。同时,施肥能提高果实品质,降低含酸量16.7～20.8％,提高总糖量2.2～20.9％,糖酸比15.7～29.4。适当的氮磷钾配合使用提高果实品质比单独使用钾肥效果更好。(2)施用复肥增产效果极显著,比对照增69.9％,施用单体氮磷钾与复肥两种之间的产量差异不显著,增产效果一致,但施复肥的处理品质最佳,降低酸量41.7％,提高糖酸比64.8,并能提高单果重,增大果粒。(3)喷浓度0.05％、0.1％的硝酸稀土增产效果极显著,增产幅度19.8～25.0％,两种浓度的效果几乎一样,品质上。喷两种浓度的硝酸稀土都能有效提高果实品质,降低含酸量7.1～19.1％,提高总糖量4.2～5.6％和糖酸比32.6～17.1。使用浓度0.1％的效果较浓度0.05％为好。
The results of three-year application of compound fertilizers and potassium fertilizers on litchi showed that: (1) Fertilizer application significantly increased yield (64.8-77.2%); combined application of potassium and nitrogen and NPK increased yield and increased fruit weight Better results. At the same time, fertilization can improve fruit quality, reduce the acid content of 16.7 ~ 20.8%, increase the total sugar content of 2.2 ~ 20.9%, sugar acid ratio of 15.7 ~ 29.4. Appropriate NPK with the use of fruit to improve the quality of potassium alone better. (2) The yield of compound fertilizer was significantly increased by 69.9% compared with the control. The yield difference between the two NPK compounds and the compound fertilizer was insignificant and the yield increase was the same. However, the treatment quality of the compound fertilizer was the best, Reduce the amount of acid 41.7%, increase sugar to acid ratio 64.8, and can improve fruit weight, increase fruit. (3) Spray concentration of 0.05%, 0.1% of rare earth nitrate yield significant effect, yield 19.8 ~ 25.0%, the effect of the two concentrations are almost the same, the quality. Spraying two concentrations of rare earth nitrate can effectively improve fruit quality, reduce acid content 7.1 ~ 19.1%, increase the total sugar 4.2 ~ 5.6% and sugar acid ratio 32.6 ~ 17.1. The use of the concentration of 0.1% of the concentration of 0.05% better.