植物营养与肥料学报2011，Vol.17Issue(1)：224-230,7.
堆肥反应器中硫磺对牛粪好氧堆肥的保氮效果研究
Nitrogen conservation by adding sulfur to dairy manure in compost bioreactors
摘要
Abstract
By utilizing compost bioreactors with dairy manure and mushroom residues as feedstocks under controlled aerobic conditions, nitrogen and sulfur transformation, compost temperature and nitrogen conservation were studied over a 21 day composting process by adding sulfur. In this experiment, sulfur was added at rates of: 0 ( non-amended control, CK), 0. 5％ (T1, on weight basis), 1.0％ (T2) with three replicates. Compared to the CK, the addition of sulfur at a rate of 0. 5％ (T1) has no significant effects on compost temperature, and the thermophilic period (temperatures greater than 50℃ ) is about 5. 5 days, while, compost temperature is increased under the addition of sulfur at a rate of 1.0％, and thermophilic period is about 4. 6 days. pH of compost is significantly decreased under the additions of sulfur, while ammonium nitrogen (NH4+ -N) content is significant increased. For example, at the end of this experiment, NH4+ -N contents of T1 and T2 are 15 and 24 times more than that of the CK, respectively. The extractable sulfur content is also significantly increased, and at the end of the experiment,extractable sulfur contents of T1 and T2 are increased by 35.7％ and 77. 1％ compared to their initial values at the beginning of the composting. Slowly increased trend in total nitrogen content is observed during this comcomposting process. The total nitrogen contents arel6. 5 g/kg for T1, 16. 9 g/kg for T2 and 15.8 g/kg for CK, with increases by 4. 4％ for T1 and 7. 0％ for T2. These results suggest that the additions of sulfur (0. 5％ or 1％ ) to the compost can significantly increase NH4+ -N and extractable sulfur contents, and enhance nitrogen conservation, thus improving the quality of compost. Compare with the addition of sulfur (0. 5％ ), effect of the addition ( 1％ ) is better,however, the thermophilic period is shorter and germination index is reduced, which are disadvantages for the harmless process of composting.关键词
硫磺/牛粪/好氧堆肥/保氮效果/堆肥反应器分类
农业科学引用本文复制引用
顾文杰,张发宝,徐培智,解开治,唐拴虎..堆肥反应器中硫磺对牛粪好氧堆肥的保氮效果研究[J].植物营养与肥料学报,2011,17(1):224-230,7.基金项目
国家"十一五"科技支撑计划(2007BAD89B14) （2007BAD89B14）
广东省教育部产学研合作项目(2008A090400001)资助. （2008A090400001）
