3.上海盛然农业科技有限公司,上海 201401
1.School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai 200240, China
2.Shanghai Agricultural Technology Extension Service Center, Shanghai 201103, China
3.Shanghai Shengran Agricultural Technology Co. Ltd., Shanghai 201401, China
为研究污泥中添加不同比例的牛粪和园林废弃物对蚯蚓堆肥的影响,在实验室进行了为期60 d的堆肥实验,测定了堆肥物料的理化性质以及蚯蚓的存活率、平均体重、产茧量的变化情况。结果表明,100%污泥不适合蚯蚓的生长繁殖,添加牛粪/园林废弃物后可以显著改善蚯蚓的生长繁殖,进而提高蚯蚓的存活率和产茧量;污泥比例较低时,添加牛粪处理组的累计产茧量要高于添加园林废弃物的处理组,但当污泥比例大于25%时,添加园林废弃物的污泥更适合蚯蚓繁殖。冗余分析结果表明,pH、TN对蚯蚓的生长和繁殖起着重要的作用。蚯蚓堆肥可以改善物料的理化状况,提高堆肥产物中氮、磷、钾的养分含量,加速污泥的稳定化,提高其肥料价值。
A 60 d laboratory experiment was conducted to investigate the effects of adding different proportions of cow dung and garden waste on sewage sludge vermicomposting. The changes in the survival rate, average mass, cocoon number of earthworm and the physico-chemical properties of composting materials were monitored. The results show that 100% sewage sludge was not suitable for the growth and reproduction of earthworm. Adding cow dung or garden waste could significantly ameliorate the growth and reproduction of earthworm, then raised its survival rate and cocoon number. When the proportion of sewage sludge was low, the cumulative earthworm cocoon numbers for the cow dung treatment was higher than that for the garden waste treatment. However, when the proportion of sludge was greater than 25%, garden waste addition was more suitable to earthworm growth. Redundancy analysis shows that pH and TN played important roles in the growth and reproduction of earthworms. Vermicomposting can ameliorate the physical and chemical conditions of composting materials, improve the proportion of nitrogen, phosphorus and potassium in compost products, and accelerate the stabilization of sewage sludge, and improve the value of fertilizer.
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Changes of the nutrient elements of different treatments
Changes of the survival rate of different treatments
Changes in the average mass of different treatments
Changes of the daily increase multiple of weight for different treatments
Changes of the cocoon number of different treatments
Changes of the daily cocoon number of different treatments
Effects of the proportion of sewage sludge on the cumulative cocoon numbers
Redundancy analysis (RDA) of the biological parameters of earthworms and the physico-chemical properties of mixtures
Initial physico-chemical properties of three different materials used for vermicomposting
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