蚯蚓对秸秆-污泥混合物的消解转化效果

为了探明蚯蚓对秸秆与污泥混合物的消解转化效果.在实验室条件下进行了模拟培养试验.试验共设不同配比混合物料6个处理,即水稻秸秆与城市生活污泥的质量比分别为0/100、10/90、20/80、30/70、40/60和50/50,各处理混合物料接种蚯蚓后在常温下培养.根据物料的消耗情况进行计量补充,并根据需要及时补充水分,始终维持培养料湿润.培养6星期后,去除未被消解的混合物料,分离并计测蚯蚓重最与蚓粪有机肥重量及养分含量.计算混合物料的消解量.结果表明,在本试验条件下,掺入10%～30%秸秆显著提高蚯蚓对混合物料的消解速率.掺入10%和20%秸秆的处珲蚯蚓生物最的增长速率显著高于掺入50%秸秆的处理.掺入10%～50%秸秆均显著提高蚯蚓转化污泥-秸秆混合物料形成有机肥的速率.蚓粪有机肥的有机质含量随着掺人秸秆比例的增加而提高;全氮和全钾含量无显著影响;与单纯采用污泥相比,当掺入秸秆比例达40%和50%时,蚓粪全磷含量显著降低.

Efficiency of Using Earthworms to Assimilate and Transform Straw-Sludge Mixture

In order to explore the effect of earthworms assimilating and transforming straw-sludge mixture, a simulated cultivation experiment was carried out in laboratory. Six treatments were designed in the experiment, different in ratio of rice straw and municipal sewage sludge, that was, 0/100, 10/90, 20/80, 30/70, 40/60 and 50/50. Inoculated with earthworms, the mixtures were incubated at normal temperature. The mixtures were maintained duly in volume and moisture by replenishing the material and water in light ...