【摘要】 对7个广西红壤柑桔园土壤剖面的26个土样有效微量元素含量进行分析,结果表明,土壤剖面中有效B、Zn、Mo严重缺乏;由于长期使用含Cu杀菌剂,导致部分果园土壤剖面中有效Cu含量过高;此外,有效B、Cu含量在土壤剖面中分布自上而下存在明显的递减性,而有效Zn、Mn、Mo的分布则无明显规律。因此,建议在红壤柑桔园上增施B、Zn、Mo肥,控制喷施含Cu杀菌剂。更多还原

【Abstract】 The contents of available microelements in 26 soil samples of 7 soil profiles collected from citrus orchards with red soil in Guangxi were determined.The results showed that available microelements B,Zn,and Mo in soil profiles of citrus orchards with red soil were considerably deficient,while available nutrient Cu in a portion of red soil was in excess level status because of applying Cu fungicides in the orchards for a long period.The results also indicated that the contents of available B and Cu decreased with the depth of soil profiles,while the distribution of available Zn,Mn,and Mo did not have an obvious trend.It suggested that more B,Zn,Mo fertilizer,and less Cu content fungicide should be applied in citrus orchards.更多还原