辽宁省耕地质量演变趋势研究

Study on the Evolvement Trend of Cultivated Land Quality in Liaoning Province

在辽宁省主要土样类型建立43个耕地质量监测点,采集86个土壤样品,对耕层厚度、容重、有机质、土壤pH、全氮、有效磷、速效钾等7项监测指标进行监测分析。结果表明:辽宁省耕层厚度和容重变化不大,土壤pH值和全氮含量基本稳定,有机质、有效磷和速效钾含量有所提高;化肥使用率有所降低,有机肥投入有所增加。

43 cultivated land quality monitoring points were set up in Liaoning province and 86 soil samples were collected for monitoring and analysis of 7 monitoring indexes, including surface layer thickness, bulk density, organic matter, soil pH, total nitrogen, available phosphorus and available potassium. The results showed that: The surface layer thickness and bulk density have little change in Liaoning province, the soil pH value and total nitrogen content were basically stable, and the contents of organic matter, available phosphorus and available potassium were increased;Fertilizer utilization rate decreased and organic fertilizer input increased.