【摘要】 利用土壤五点随机分层取样法对辽宁省农村土壤进行评价研究,以50 cm×50 cm网栺法根据不同深度取得土样28份,分析样品有机质、铵态氮、速效钾、速效磷、酸碱度等5项指标。根据国家土壤速效养分标准将取得土样划分水土污染等级,同时,采用表栺分析法讨论土壤速效养分分布状况以及综合分析出污染程度对土壤速效养分分布状况的影响。更多还原

【Abstract】 Soil five-point random stratified sampling method was used to evaluate rural soils in Liaoning province, 28 soil samples were obtained from different depths by 50 cm×50 cm grid method, and five indexes of organic matter,ammonium nitrogen, available potassium, available phosphorus, acidity and alkalinity were analyzed. According to the national soil available nutrient standard, soil and water pollution grades of the soil samples were determined. At the same time, the distribution of soil available nutrients were discussed by tabular analysis, and the influence of pollution degree on the distribution of soil available nutrients was analyzed.更多还原