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1987—1989年对广西三地区40个农场果园的柑桔进行叶片及土壤养分含量分析,结果表明,温州蜜桔叶片氮的适宜含量为2.5—3.0％,磷为0.1—0.2％,钾为1.0—2.0％;椪柑叶片的适宜含量为氮2.8—3.2％,磷为0.12—0.18％,钾为1.0—1.6％;甜橙氮为2.5—3.0％,磷为0.12—0.18％,钾为1.1—1.7％,大部分柑桔园的叶片及土壤氮,磷、钾都不同程度的表现缺乏。尤其缺磷、钾严重.
From 1987 to 1989, the leaf and soil nutrient contents of citrus in 40 farm orchards in three areas of Guangxi were analyzed. The results showed that the suitable nitrogen content in leaves of Wenzhou orange was 2.5-3.0%, phosphorus was 0.1-0.2%, potassium was 1.0 -2.0% respectively; suitable content of P. citrus leaves was 2.8-3.2% nitrogen, 0.12-0.18% phosphorus, 1.0-1.6% potassium, 2.5-3.0% potassium nitrogen, 0.12-0.18% phosphorus and 1.1- 1.7%, most of the citrus orchards leaves and soil nitrogen, phosphorus and potassium are different degrees of lack of performance. In particular, phosphorus deficiency, potassium serious.