崇明三岛柑橘园土壤养分特征研究  

Soil nutrient characteristics of citrus orchard in Chongming three islands

作　　者：王庆峰 褚长彬[1] 赵峥[1] 周德平[1] 吴淑杭[1] WANG Qingfeng;CHU Changbin;ZHAO Zheng;ZHOU Deping;WU Shuhang(Eco-Environmental Protection Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai 201403,China)

机构地区：[1]上海市农业科学院生态环境保护研究所,上海201403

出　　处：《上海农业学报》2022年第2期70-75,共6页Acta Agriculturae Shanghai

基　　金：2018年度“科技创新行动计划”农业领域项目(18391902600);上海市国内科技合作项目(20015800600)。

摘　　要：利用土壤养分状况系统研究法(ASI法)分析了上海市崇明三岛(崇明岛、横沙岛和长兴岛)柑橘园上层土壤(0—20 cm)和下层土壤(20—40 cm)的养分含量特征及差异。结果表明:崇明三岛柑橘园土壤(0—40 cm)大量元素氮平均含量分别为22.7 mg∕L、16.5 mg∕L和9.8 mg∕L,磷平均含量分别为26.0 mg∕L、66.3 mg∕L和29.4 mg∕L,钾平均含量分别为30.0 mg∕L、114.7 mg∕L和42.2 mg∕L,有机质平均含量分别为7.6 mg∕kg、7.1 mg∕kg、6.3 mg∕kg,且上层土壤的氮、磷、钾和有机质含量显著高于下层土壤。崇明三岛柑橘园上层土壤的pH低于下层土壤,不同岛屿柑橘园土壤pH变动范围为8.23—8.41。崇明三岛不同岛屿之间柑橘园下层土壤的主要中量元素(钙和镁)含量无显著差异,而上层土壤差异显著;不同岛屿柑橘园上层土壤和下层土壤的硫含量均没有显著差异。柑橘园土壤微量元素铁、铜、锌含量处于较高水平,且上层土壤的含量高于下层土壤。可见,崇明三岛柑橘园上层土壤和下层土壤主要营养元素差异显著,上层土壤pH低于下层土壤。建议崇明岛果园多施用有机肥,调控土壤pH,降低土壤铁、铜、锌等微量元素含量。The characteristics and differences of nutrient content in upper soil(0—20 cm)and lower soil(20—40 cm)of citrus orchard in Chongming three islands(Chongming island,Hengsha island and Changxing island)in Shanghai were analyzed by using the systematic study method of soil nutrient status(ASI method).The results showed that the average large element nitrogen content in citrus orchard soil(0—40 cm)in Chongming three islands were 22.7 mg∕L,16.5 mg∕L and 9.8 mg∕L respectively,the phosphorus content were 26.0 mg∕L,66.3 mg∕L and 29.4 mg∕L respectively,the potassium content were 30.0 mg∕L,114.7 mg∕L and 42.2 mg∕L respectively,and the organic matter content were 7.6 mg∕kg,7.1 mg∕kg and 6.3 mg∕kg respectively.The nitrogen content,phosphorus content,potassium content and organic matter content in the upper soil were significantly higher than those in the lower soil.The pH of the upper soil of Chongming three islands citrus orchard was lower than that of the lower soil.The variation range of soil pH in different islands citrus orchards was 8.23—8.41.There was no significant difference in the main medium elements content(calcium and magnesium)in the lower soil of citrus orchard between different islands of Chongming three islands,but there was significant difference in the upper soil;There was no significant difference in sulfur content between the upper soil and the lower soil in citrus orchards on different islands.The content of trace elements iron,copper and zinc in citrus orchard soil was at a high level,and the content in the upper soil was higher than that in the lower soil.It could be seen that there were significant differences in the main nutrient elements between the upper soil and the lower soil of Chongming three island citrus orchard,and the pH of the upper soil was lower than that of the lower soil.It was suggested to apply more organic fertilizer in Chongming three island orchard,regulate soil pH and reduce the trace elements content such as iron,copper and zinc.

关 键 词：崇明三岛 柑橘 土壤养分 ASI法 

分 类 号：S158[农业科学—土壤学]