ABSTRACT In a fig (Ficus carica L. cv. Kalamon) orchard, located in Peloponnese (Greece), the effect of fertilization with nitrogen (N), phosphorus (P) and potassium (K) (NPK) on the yield and the nutritional status of trees was studied. The particular fig orchard is rainfed, producing figs for drying. The experiment was carried out in 2005 and 2009, including the following treatments (the indexes show the application rates of the respective nutrients in kg per tree): In 2005, 1) Ν0Ρ0.6Κ0.6, 2) Ν0Ρ1.2Κ0.6, 3) Ν0Ρ1.8Κ0.6, 4) Ν0.5Ρ0.6Κ0.6, 5) Ν1Ρ1.2Κ0.6, 6) Ν1Ρ1.8Κ0.6, 7) Ν0Ρ1.2Κ1.2, 8) Ν1Ρ1.2Κ1.2, and in 2009, 1) Ν0.3Ρ0Κ0, 2) Ν0.3Ρ0.6Κ0.6, 3) Ν0.3Ρ1.2Κ0.6, 4) Ν0.3Ρ1.8Κ0.6, 5) Ν0.5Ρ0.6Κ0.6, 6) Ν1Ρ1.2Κ0.6, 7) Ν1Ρ1.8Κ0.6, 8) Ν0.3Ρ1.2Κ1.2, and 9) Ν1Ρ1.2Κ1.2. The results showed that N is an important nutrient for the yield of the fig tree. The highest fruit production was recorded in the trees treated with Ν1Ρ1.2Κ0.6. Interesting yields were recorded in the Ν1Ρ1.8Κ0.6 and Ν0.3Ρ1.2Κ0.6 treatments and the treatment Ν0.3Ρ1.2Κ0.6 was suggested that it requires further research as the most economical one. These treatments gave the highest yields with relatively early harvest maturity. Yield in relation to the doses of NPK nutrients can be described by a multiple secondary regression equation.

中文翻译：

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NPK施肥对地中海条件下生长的无花果树（Ficus Carica L. Cv. Kalamon）产量和营养状况的影响

摘要 在位于伯罗奔尼撒（希腊）的无花果（Ficus carica L. cv. Kalamon）果园中，施肥与氮 (N)、磷 (P) 和钾 (K) (NPK) 对产量和营养的影响研究了树木的状况。特殊的无花果园是雨养的，生产用于干燥的无花果。试验分别于2005年和2009年进行，包括以下处理（指标显示各养分的施用量，单位为公斤每棵树）：2005年，1）Ν0Ρ0.6Κ0.6，2）Ν0Ρ1.2Κ0.6， 3) Ν0Ρ1.8Κ0.6, 4) Ν0.5Ρ0.6Κ0.6, 5) Ν1Ρ1.2Κ0.6, 6) Ν1Ρ1.8Κ0.6, 7) Ν0Ρ1.2Κ1.2, 8),12Ν1.2Ν1Ρ1.2Κ0.6并且在 2009 年，1) Ν0.3Ρ0Κ0, 2) Ν0.3Ρ0.6Κ0.6, 3) Ν0.3Ρ1.2Κ0.6, 4) Ν0.3Ρ1.8Κ0.6, 5) Ν0.5Κ0.6. 6) Ν1Ρ1.2Κ0.6, 7) Ν1Ρ1.8Κ0.6, 8) Ν0.3Ρ1.2Κ1.2, 和 9) Ν1Ρ1.2Κ1.2。结果表明，N是无花果树产量的重要养分。在用Ν1Ρ1.2Κ0.6处理的树中记录了最高的果实产量。有趣的产量记录在 Ν1Ρ1.8Κ0.6 和 Ν0.3Ρ1.2Κ0.6 处理中，而 Ν0.3Ρ1.2Κ0.6 处理被认为需要进一步研究作为最经济的处理。这些处理的产量最高，收获成熟期相对较早。与 NPK 营养素剂量相关的产量可以通过多元二次回归方程来描述。