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作 者 ：周鑫斌, 石孝均, 孙彭寿, 李伟, 戴亨林, 彭良志, 淳长品

期 刊 ：植物营养与肥料学报 2010年 16卷 4期 页码：817-823

关键词：柑橘园；土壤有效养分；肥力状况；

Keywords:citrus orchard, soil available nutrients, status of soil fertility,

摘 要 ：采集了三峡重庆库区柑橘主产区459个果园0—30 cm的土壤样品进行取样分析。结果表明，库区有78.7%柑橘园土壤pH值适合柑橘生长; 有60.3%的柑橘园土壤有机质含量偏低。土壤速效氮和磷缺乏，分别占到72.4%和41.7%，土壤速效钾缺乏和过量并存。库区柑橘园缺乏有效B、Zn、Fe、Mn的比例分别为86.3%、37.9%、27.0%、20.3%; 土壤有效Fe、Mn和Cu含量在部分果园存在过量现象，分别占柑橘园的52.5%、36.4%和26.4%。因此，该区柑橘生产要因地制宜，建议在柑橘园增施B、Zn肥，石灰和其它碱性肥料，同时减少喷施含Cu杀菌剂。

Abstract:Knowing soil nutrient fertility status is a basis to formulate a suitable fertilization strategy. Top soil(0-30 cm)samples collected from 459 citrus orchards in Chongqing Sanxia Reservoir Area were tested and classified in present study. The results showed that the soil pH of 78.7% orchards was suitable for citrus growth, soil organic matter of 60.3% orchards were low, and the deficiency rate of available macro-nutrients N and P was 72.4% and 41.7%, respectively, while soil available K were high in some orchards. The deficiency rate of available B, Zn, Fe and Mn was 86.3%, 37.9%, 27.0% and 20.3%, respectively. The results also indicated that amounts of citrus soils which have excessive available Fe, Mn and Cu accounted for 52.5%, 36.4% and 26.4% of total citrus orchards. Therefore, it was suggested that more B, Zn, lime or other alkaline fertilizer and less Cu fungicide should be used in the tested citrus orchards.

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