文昌县琼香神韵苗圃基地土壤养分特征

Soil nutrient characteristics of Qiongxiangshenyun Nursery Base in Wenchang County

对海南省文昌县琼香神韵苗圃基地基本土壤肥力特征和重金属含量进行测定。结果表明,该区土壤呈酸性;除土壤全K外,土壤有机质、全N、全P、有效P、速效K、NO^-_3-N和NH^+_4-N含量均随着土壤深度的增加呈降低趋势;除个别指标外(pH、速效K、NO^-_3-N等),其他肥力指标不同取样点间变异程度较大,表明该基地土壤肥力具有不均匀性;重金属均未超标,不存在土壤重金属污染问题。

The basic soil fertility characteristics and heavy metal content of Qiongxiangshenyun Nursery Base in Wenchang County, Hainan Province were assessed. The results showed that the soil in this area was acidic;except for soil total potassium, the contents of soil organic matter, total nitrogen, total phosphorus, available phosphorus, available potassium, nitrate nitrogen and ammonium nitrogen all decreased with the increase of soil depth. Except for a few indexes (pH, available potassium, nitrate nitrogen, etc.), other indexes showed a relatively large degree of variations among sampling sites, reflecting the heterogeneity of soil fertility across the nursery base. Heavy metals did not exceed the standard and there was no problem of heavy metal pollution in the soil.