The agricultural application has become one of the most important ways for sewage sludge recycling.
城市污泥农用是城市污泥资源化利用的重要途径之一。
Now, land application of sewage sludge has become an important way for sewage sludge disposal duo to its lower cost and higher efficiency.
但是污泥中的重金属成为污泥土地利用的主要限制因素,因此,我们动态监测了北京市污泥养分和重金属含量,采用盆栽方法研究了污泥中重金属的植物有效性,并研究了大田模式下污泥施用对土壤环境和小麦重金属含量的影响,初步探讨了北京市污泥农用的肥料和环境效应。
Fuzzy evaluation on soil environmental quality of Yangchang agricultural land in Wudang district;
乌当区羊昌镇农用地土壤环境质量模糊评价
Preprocess of Agricultural land Gradation and Appraisal Factor——A Case of Agricultural Land Gradation in Xinyang City;
农用地定级估价因素因子的预处理——以信阳市农用地定级工作为例
The characteristics, the working mechanisms on urease and nitrating inhibition as well as ammonia stability, technological keys, fertilizer product quality, and agricultural effect of compound fertilizer based on humic acid are discussed for the increase in fertilizer efficiency, improvement of agricultural product and raise of crop yield.
阐述腐植酸复混肥的性能、作用机理(脲酶抑制和硝化抑制机理及氨稳定机理)、生产技术要点、产品质量、农用效果(提高肥料利用率,改善农产品品质,提高作物产量)。