沙田柚果园土壤铜素的含量及其剖面分布特征研究(英文)  

Copper content in citrus grandis orchards and its distributing characters of soil profiles

作　　者：黄玉溢[1] 刘斌[1] 陈桂芬[1] 王影 江泽普[1] 

机构地区：[1]广西农科院土壤肥料研究所,南宁530007 [2]广西大学农学院,南宁530005

出　　处：《广西农业科学》2007年第1期58-61,共4页Guangxi Agricultural Sciences

基　　金：广西科学基金资助项目(桂科自0447018)

摘　　要：对广西沙田柚主产区果园21个0-30cm表层土壤样品和12个土壤剖面的36个土壤样品进行了有效铜及全铜含量测试分析。结果表明，沙田柚果园的表层土壤有效铜含量范围是0．18～23．93mg／kg，平均值为3．33mg／kg，高过广西耕地土壤有效铜的平均含量及柑桔园土壤有效铜的适量范围；土壤全铜含量在5．71～71．35mg／kg之间，平均值为29．36mg／kg；果园表层土壤有效铜含量主要受土壤pH和有机质含量影响；在土壤剖面中，土壤有效铜及全铜含量随土壤剖面层次的加深而减少。In the present experiment, the contents of available copper and total copper in 21 top soil（0～30） samples and 36 soil samples of 12 soil profiles collected from main citrus grandis producing areas of Guangxi were determined. The results showed that the available copper content in top soil of the citrus grandis orchards was 0. 18-23.93 mg/kg, and its average was 3.33 mg/kg which was higher than that of cultivated soils in Guangxi and the optimum range for the citrus orchard. The total copper content and its average were 5.71-71.35 mg/kg and 29. 36 mg/kg, respectively. Moreover, soil pH and soil organic matter were the main factors to affect the available copper content in top soil of the citrus grandis orchards. The results also indicated that the available copper and total copper contents in soil profile were decreased with increased depth in the soil profile.

关 键 词：沙田柚果园 铜 分布特征 土壤剖面 

分 类 号：S143.72[农业科学—肥料学]