沼液对蚯蚓生长和繁殖的影响

Effect of Biogas Liquid on the Growth and Breeding of Earthworm

[目的]研究在蚯蚓养殖过程中使用沼液作保湿液对蚯蚓生长的影响,为沼液废物资源化利用、蚯蚓养殖使用沼液提供参考。[方法]用赤子爱胜蚓为试验种,在经发酵处理的和未经发酵处理的牛粪2个组中养殖,定期施加沼液保持湿度,以施加清水作对照,分别就沼液对蚯蚓生长、繁殖及孵化的影响进行研究。[结果]在经发酵处理的牛粪组中施加沼液,蚯蚓的日增重倍数增加明显;再用挑出的蚓茧试验,发现施加沼液对其孵化有负影响。表明在蚯蚓的生长阶段,沼液的添加对于成蚓和幼蚓的生长都有明显的促进作用;但在蚯蚓的繁殖阶段,沼液的添加不利于其繁殖以及蚓茧的孵化。[结论]在实际应用沼液养殖蚯蚓时,应将沼液的使用范围限制在蚯蚓的生长阶段,繁殖与孵化阶段不宜使用。

[Objective]The reference for the utilization of the biogas liquid as resource in earthworm-raising was provided through the research on the effect of the biogas liquid as moisture liquid on the earthworm-raising.[Method]The earthworm—Chizian being taken as experimental material,the effect of biogas liquid on earthworm growth,multiplication and hatching was researched based on the design of the biogas liquid added into two treatments,in which the earthworm was cultured in the fermented and un-fermented dung,respective,for the moisture-keeping and the water treatment as CK.[Results]The daily weight-increasing of earthworm was significantly promoted in the treatment that the earthworm was cultured in the fermented dung and biogas liquid was added.The cocoon of earthworm was chosen for the hatching experiment and results showed that its multiplication was negatively affected by the addition of biogas liquid.Thus,the addition of biogas liquid had obviously promoting role in the growth of adult and young earthworm;but it was not conducive to the reproduction and hatching of earthworm.[Conclusion]In the practical application of the biogas liquid in earthworm-raising,it could be applied in the growth stage of earthworm and not be used in its reproduction stage.