污泥堆肥及其复合肥对草坪生物效应和环境效应的影响

Effects of Sludge Compost and Its Compound Fertilizers on Biological Effect and Environmental Effect of the Lawn

研究了污泥堆肥及复合肥对草坪草的生物效应、土壤效应的影响。试验结果表明,污泥堆肥及草坪专用复合肥对草坪草的生长具有良好的生物效应。污泥堆肥及复合肥的施用使草坪草的叶绿素含量增加,污泥堆肥施用量高的叶绿素含量明显高于其它处理,达到了一级水平。试验结果还表明,污泥堆肥及复合肥的施用促进了草坪草叶片对氮素的吸收,使草坪草在成坪期获得了充足的养分。并保持了肥料的持续性。污泥堆肥及复合肥对草坪草具有较好的培肥效应,污泥堆肥及复合肥处理可提高土壤全量及有效N,P和K含量,且明显高于对照组。

Aiming at the present situation of the increasing of waste water displacement amount, sewage sludge which contains a lot of organic matter and nutrient for the plant was used to manufacture sludge compost and sludge compound fertilizer. It showed that sludge compost and sludge compound fertilizer exerted a good influence to turfgrass＇s growth. They made turfgrass＇ s chlorophyll content get a raise Comparing with the chemical fertilizer, the biomass of turfgrass increased Sludge compost brought into play slow - release fertilizer action. In pot experiment, sludge compost and sludge compound fertilizer promoted turfgrass to absorb nitrogen. The content of nitrogen of turfgrass blade treated by sludge compost remarkably increased than that in the control treatment. An addition,sludge compost and sludge compound fertilizer proved the total and effective nutrient contents of N, P and K in soil . Therefore, there are good effections to cultivate soil fertility for turfgrass, so applying sludge compost - Through this research, sludge compost and sludge compound fertilizer were applied to gardens and green lands, which avoided food chain and solved the problem of sludge handle for sewage treatment plant Sludge compost and sludge compound fertilizer are ideal organic fertilizer for turfgrass which make the land utilization of sludge have a good prospects.