摘要
对湖南省林地不同土壤类型的养分状况进行了分析。结果表明:不同土壤类型之间有机质含量和速效氮含量差异较大,速效磷含量和速效钾含量差异较小。全省有机质含量最高的为山地草甸土,为63.60 g/kg,最低的是潮土,只有16.46 g/kg;速效氮含量最高的为山地草甸土,达到203.10 mg/kg,最低的是紫色土,为57.46 mg/kg;速效磷含量最高的为潮土,为11.77 mg/kg,最低的是石灰土,为2.28 mg/kg;速效钾含量最高的是石灰土,为72.70 mg/kg,最低的是山地草甸土,为60.26 mg/kg。各地市州中,除益阳市潮土的有机质、速效氮、速效磷、速效钾含量均居全省最高外,其它地区、其它土类的养分状况未表现出行政区域上的地域规律。
The nutrient status of different soil types of forest in Hunan Province was analyzed. The results showed that the differences of organic matter content and available nitrogen content were more obvious than that of available phosphorus content and available potassium content. The highest content of available organic matter was mountain meadow soil （63.60 g/kg ） , and the lowest was alluvial soil （ 16.46 g/kg ） ; the highest available nitrogen content was mountain meadow soil （ 203.10 mg/kg ） , the lowest was purplish soil （ 57.46 mg/kg ） ; the highest available phosphorus content was alluvial soil （ 11.77 mg/kg ） , the lowest was limestone soil （ 2.28 mg/kg ） ; the highest available potassium content was limestone soil （ 72.70 mg/kg ） , the lowest was the mountain meadow soil （ 60.26 mg/kg ） . The nutrient status of other soil types in other administrative areas did not show the regional laws except that the organic matter, available nitrogen, available phosphorus and available potassium contents of alluvial soils in Yiyang City were the highest.
出处
《湖南林业科技》
2017年第3期21-26,共6页
Hunan Forestry Science & Technology
基金
湖南省科技计划项目(2016NK2157)
关键词
林地
土壤类型
土壤养分
forest land
soil type
soil nutrient
