碩士 / 國立中興大學 / 土壤環境科學系所 / 102 / The production of livestock manure was increased with increasing livestock industrial development and people population, therefore, more environmental crisis were caused. Thermocomposting has been adopted as a good way for reduction and recycle of wastes. Vermicomposting is emerging as a appropriate alternative to thermocomposting, this process is not only easily controllable, cost effective, energy saving, and no waste process, but also accomplishes most efficient recycling of organics and nutrients. The pathogens and weed seeds couldn’t be eliminated, and the content of ammonia in the livestock manure couldn’t be decreased effectively by vermicomposting due to the temperature during the vermicomposting was at 10 ~ 35℃ for earthworm growth, however, these problems could be resolved by pre-composting. The nutrient availabilities of raw materials and the growth and reproduction of earthworm may be reduced after pre-composting and then the quality of vermicompost will be affected. The aims of this study were to evaluate the effect of the mixtures of pig manure and mushroom culture wastes with different pre-composting time on earthworm growth and reproduction and the characteristic and quality of vermicomposts after vermicomposting. The earthworms were feed in different treatments, and the survival, mature worm biomass, cocoon production, reproduction of the earthworm were determined over experimental period. Another experiment was conducted to compare the properties of end product of composting with and without earthworm using those mixtures. Vermicomposts produced from each treatment were analyzed and their qualities were evaluated. Result showed that the mature worm biomass was higher in the treatment without pre-composting, due to the lower C/N ratio, and the number of immature worm was higher in the treatment with 3-week pre-composting, because of lower toxicity existed. The pH, the contents of organic matter and organic carbon were decreased, and the contents of nutrients and heavy metals were increased for all treatments after experiment. In addition, the changes in these contents of all treatments were stable after 28-day vermicomposting. Based on the results of C/N, seed germination and ingredient analysis, vermicomposts obtained from all treatments were found to meet the standards of compost announced by the Agriculture Council of ROC.
| Identifer | oai:union.ndltd.org:TW/102NCHU5020002 |
| Date | January 2014 |
| Creators | Ming-Hong Zhan, 詹明泓 |
| Contributors | 陳仁炫 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 84 |
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