基于葛渣肥料化利用的蚯蚓转化技术研究.

In order to explore a new mode of resource utilization of Pueraria root residue, a pilot vermicomposting indoor experiment was carried out using Eisenia fetida for bio-transformation of freshly decomposed Pueraria root residue and fresh Pueraria root residue mixed with cow dung at different ratios. The effect of decomposed Pueraria root residue and the effects of different ratios of Pueraria root residue and cow dung on the growth and reproduction index of earthworm were analyzed. The changes in fertilizing properties of the materials were analyzed before and after vermicomposting, and seed germination was evaluated to determine the effect of vermicomposting. The results showed that fresh Pueraria root residue and decomposed Pueraria root residue alone were not conducive to the growth and reproduction of earthworms. Earthworms were able to grow and reproduce normally in fresh Pueraria root residue mixed with cow dung, which a mixture of 10% fresh Pueraria root residue and 90% cow dung was the most favorable to earthworm reproduction. After earthworm composting, the total organic matter content decreased significantly, the total nutrient content increased significantly, and the seed germination index increased to a certain extent. The total nutrient content of a mixture composed of 70% fresh Pueraria root residue and 30% cow dung was 102.2 g·kg-1 and 57.7% higher than that of a mixture of 10% fresh Pueraria root residue and 90% cow dung. The earthworm bio-treatment technology can be applied to the production of fertilizer from Pueraria root residue. A mixture of 70% fresh Pueraria root residue and 30% cow dung delivers the optimal conditions for earthworm composting. [ABSTRACT FROM AUTHOR]