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为了提高龙眼产量，提高钾肥的施肥效益，于1993～1995年进行龙眼果园不同钾肥用量的施肥试验．结果表明，龙眼在施用氮碗肥及补充土壤缺乏的中微量元素养分的基础上，增施钾肥可增大果型、提高单果重，显著增加果实产量，并可改善果实品质；龙眼增施钾肥有明显的经济效益．提出龙眼适宜的施钾量为：每株每产50kg鲜果树面年施K2O1.2kg．
In order to improve longan output and increase fertilization efficiency of potash fertilizer, the fertilization experiment of different potash dosages of longan orchard was conducted from 1993 to 1995. The results showed that applying long-term nitrogen fertilizer and supplementing medium and trace element nutrients lacking in soil could increase fruit type, increase fruit weight, increase fruit yield and improve fruit quality. The increase of potassium fertilizer in longan There are obvious economic benefits. It is proposed that the suitable potassium application rate for longan is as follows: K2O1.2kg is applied annually to 50kg of fresh fruit trees per plant.