摘要
采集海南海口市琼山区8个乡镇5种主要土类的798个耕层土壤,分析了土壤有效硫含量。结果表明:全区土壤有效硫含量平均为54.54 mg/kg,最低0.10 mg/kg,最高275.80 mg/kg,变异系数在0.34-1.34之间,所有乡镇平均有效硫含量均在临界值16 mg/kg以上;不同土类土壤有效硫平均含量大小顺序依次为:石质土〉潮沙泥土〉水稻土〉砖红壤〉滨海沙土,滨海沙土的有效硫含量严重缺乏;海口市琼山区有96.54%的土地面积有效硫含量处于不缺或丰足水平,严重缺硫出现在龙塘镇,严重缺硫面积为10.26 km^2,占琼山区土地总面积的1.13%。总体来说海口市琼山区土壤有效硫含量丰富,缺硫土地面积分布很小。
798 soil samples of 5 soil types were taken from 8 towns in Qiongshan area of Haikou city and their available sulfur contents were analyzed. The result showed that the average available sulfur content was 54.54 mg/kg, with the minimum of 0.10 mg/kg and the maximum of 275.80 mg/kg, and the coefficient of variation was between 0.34 - 1.34. The available sulfur average content of all townships was up to critical value of 16 mg/kg. The sulfur content varied in different soil types, the consequent succession followed as Litho soil 〉 moistly sandy soil 〉 paddy soils 〉 laterite 〉 coastal sandy soil, the serious lacking of soil available sulfur was coastal sandy soils. It was 96.54 % land area of Qiongshan area had adequate soil available sulfur, the most lacking of soil available sulfur was Longtong town ; the area was about 10. 26 square kilometers. Overall, the soil available sulfur content of Qiongshan area were very rich, small area appears soil available sulfur deficiency.
出处
《西南农业学报》
CSCD
北大核心
2010年第5期1586-1590,共5页
Southwest China Journal of Agricultural Sciences
基金
农业部全国测土配方施肥资金补贴项目(海口市)
关键词
海口市琼山区
土壤有效硫
现状
Qiongshan area of Haikou city
Soil available sulfur
Actuality