Chinese Academy of Sciences, Beijing, China.
J Environ Qual. 2012 Jul-Aug;41(4):1221-7. doi: 10.2134/jeq2011.0373.
Stored poultry manure can be a significant source of ammonia (NH) and greenhouse gases (GHGs), including nitrous oxide (NO), methane (CH), and carbon dioxide (CO) emissions. Amendments can be used to modify physiochemical properties of manure, thus having the potential to reduce gas emissions. Here, we lab-tested the single and combined effects of addition of reed straw, zeolite, and superphosphate on gas emissions from stored duck manure. We showed that, over a period of 46 d, cumulative NH emissions were reduced by 61 to 70% with superphosphate additions, whereas cumulative NO emissions were increased by up to 23% compared with the control treatment. Reed straw addition reduced cumulative NH, NO, and CH emissions relative to the control by 12, 27, and 47%, respectively, and zeolite addition reduced cumulative NH and NO emissions by 36 and 20%, respectively. Total GHG emissions (as CO-equivalents) were reduced by up to 27% with the additions of reed straw and/or zeolite. Our results indicate that reed straw or zeolite can be recommended as amendments to reduce GHG emissions from duck manure; however, superphosphate is more effective in reducing NH emissions.
储存的家禽粪便可能是氨（NH）和温室气体（GHG）的重要来源，包括氧化亚氮（NO）、甲烷（CH）和二氧化碳（CO）的排放。改良剂可用于改变粪便的理化性质，从而有可能减少气体排放。在这里，我们在实验室测试了添加芦苇秸秆、沸石和过磷酸钙对储存鸭粪气体排放的单一和综合影响。结果表明，在 46 天的时间内，与对照处理相比，添加过磷酸钙可将累积的 NH 排放减少 61%至 70%，而累积的 NO 排放增加了 23%。与对照相比，添加芦苇秸秆可分别减少累积的 NH、NO 和 CH 排放 12%、27%和 47%，而添加沸石可分别减少累积的 NH 和 NO 排放 36%和 20%。添加芦苇秸秆和/或沸石可将总 GHG 排放（以 CO 当量计）减少多达 27%。我们的结果表明，芦苇秸秆或沸石可作为改良剂推荐用于减少鸭粪的 GHG 排放；然而，过磷酸钙在减少 NH 排放方面更有效。
