拉萨河流域拉萨市河段土壤理化性质研究

Research on Physical and Chemical Properties of Soil in Lhasa City Section of Lhasa River Basin

以拉萨河流域耕地、温室大棚、荒地土壤为研究对象,用五点取样法取0~20 cm土壤,研究其理化性质。结果表明,拉萨河流域耕地、温室大棚、荒地土壤含水量、pH值、总有机碳含量、硝态氮、铵态氮、有效磷含量等存在显著差异。对于土壤含水量、EC值、总有机碳来说,温室大棚土壤>耕地>荒地;对于pH来说,耕地和荒地为偏碱性土壤,而温室大棚土壤在5.0~8.5;对于土壤有效磷、硝态氮、铵态氮含量来说,温室大棚高于耕地和荒地。其为拉萨河流域设施农业的可持续发展提供了一定的理论和科学依据。

Taking cultivated land,greenhouse and wasteland soil in Lhasa River Basin as the research object,0~20 cm soil was taken by five point sampling method to study its physical and chemical properties.The results showed that there were significant differences in soil water content,pH value,total organic carbon content,nitrate nitrogen,ammonium nitrogen and available phosphorus in cultivated land,greenhouse and wasteland in Lhasa River Basin.For soil water content,EC Value and total organic carbon,greenhouse soil>cultivated land>wasteland;For pH,cultivated land and wasteland are alkaline soil,while greenhouse soil is 5.0~8.5;For the content of soil available phosphorus,nitrate nitrogen and ammonium nitrogen,greenhouse is higher than cultivated land and wasteland.It provides a certain theoretical and scientific basis for the sustainable development of facility agriculture in Lhasa River Basin.