【摘要】 采用土壤养分状况系统研究法,对海南岛两大典型香蕉种植园土壤进行了土壤的吸附特性研究。结果表明:①不同土壤对不同营养元素的吸附固定能力不同:②两种土壤对K、Cu、Zn的吸附固定作用比较弱,两者对Cu、Zn的吸附固定能力较接近,但对K的吸附固定作用有着明显的不同。③燥红土对P的吸附固定作用较强;④两种土壤部对B有着很强的吸附固定作用,其中燥红土在2～4μg/ml浓度时对B有着极其强烈的吸附固定作用;⑤砖红壤对0～80μg/ml浓度的S的吸附固定能力很强。而燥红土对S的吸附固定则比较弱;⑥砖红壤对0～5μg/ml内的Mn有着强吸附,燥红土对0～20μg/ml内的Mn有强吸附。更多还原

【Abstract】 The soil nutrient systematic study method was employed in this paper to study characteristics of soil nutrient adsorption in two big typical banana plantations on Hainan Island.Results showed:(1)The two soils varied sharply in nutrient adsorbing capacity with nutrient;(2)Though both were quite weak in capacity of adsorbing K,Cu and Zn,and quite similar to each other in capacity of adsorbing Cu and Zn,they differed significantly in K adsorbing capacity;(3)Dry red soil was rather strong in P adsorbing capacity;(4)Both were very high in B adsorbing capacity,and especially when B content ranged between 2～4μg/ml in dry red soil;(5)Latosol was very high in S adsorbing capacity particularly when S content was in the ragne of 0～80μg/ml,but dry red soil was quite low;and(6)both latosol and dry red soil were high in Mn adsorbing capacity when the content of Mn was in the range of 0～5μg/ml and 0～20μg/ml,respectively.更多还原