论文部分内容阅读
结合北京市污泥堆肥土地利用现状,研究了污泥堆肥对土壤环境及高羊茅(Festuca arundinacea)的影响,旨在为北京市污泥堆肥用于高羊茅园林生产提供理论依据,促进资源再利用。研究结果表明,施用污泥堆肥增加了高羊茅栽植小区土壤养分含量,特别是土壤中有机质含量增加明显,与空白对照相比增加了43.9%~73.2%,对土壤养分状况具有一定的改良效果;施用污泥堆肥后,高羊茅栽植小区土壤中重金属含量虽有不同程度的增加,但均远低于相关标准限值,且土壤重金属污染综合指数小于土壤安全限值0.7,表明种植小区土壤未受到重金属污染;施用污泥堆肥对高羊茅生长具有一定的促进作用,与空白对照相比,高羊茅总生物量增长率为16.7%~50.0%。综合分析试验结果,确定污泥堆肥用于高羊茅的适宜施用量为2 kg/m2。
Combined with the present state of land use of sludge compost in Beijing, the effects of sludge compost on soil environment and Festuca arundinacea were studied in order to provide a theoretical basis for sludge compost used in the production of tall fescue garden in Beijing, and to promote resources Reuse. The results showed that the application of sludge compost increased soil nutrient content of tall fescue planting area, especially soil organic matter content increased significantly, compared with the blank control increased by 43.9% ~ 73.2%, on the soil nutrient status has a certain improvement . However, the content of heavy metals in the soil of tall fescue planting area increased to some extent after application of sludge compost, but both were far lower than the relevant standard limits, and the comprehensive index of soil heavy metal pollution was less than the soil safety limit of 0.7, indicating that the planting soil Which was not contaminated by heavy metals. The application of sludge compost had a certain promotion effect on the growth of tall fescue. Compared with the blank control, the growth rate of total fescue was 16.7% -50.0%. Comprehensive analysis of the test results, to determine the appropriate amount of sludge compost for tall fescue application rate of 2 kg / m2.