农业环境科学学报2011，Vol.30Issue(5)：1021-1026,6.
畜禽废水磷回收产物的磷素释放特性及肥效试验研究
The Phosphorus Release Characteristics and Fertility of Recovery Product from the Livestock Wastewater After Digestion
摘要
Abstract
The precipitating crystallization with aeration was used to recover phosphorus from the livestock wastewater after anaerobic digestion.The release characteristics of soluble phosphorus in RPP(recovery product of phosphorus) were examined with the continuous water extraction method and a pot experiment was carried out to investigate the fertility of RPP.The results of the extraction experiment indicated that the release amount of soluable phosphorus decreased slowly when more extractions occurred; the phosphorus release amount of the sixth time extraction was only 1.42％ lower than that of the first time; the cumulative release amount of phosphorus accounted for 57.97％ of the total phosphorus; it proved that RPP was a good slow-released fertilizer whose nutrient was not easy to lose.The results of the pot experiment indicated that the biomass of maize all increased when RPP was used in different proportion, with monoammonium phosphate ( MAP); the optimal application proprotion was 40％; additionally, the absorption amount of phosphorus increased 19.14％ in shoots and 2.50％ in roots, respectively, when RPP was used as phosphorus fertilizer instead of MAP.In conclusion, RPP from livestock wastewater after digestion was a good phosphorus, which was beneficial to save resources, protect environment and alleviate the crisis of phosphorus.关键词
磷回收产物/肥效/缓释性/玉米Key words
recovery product of phosphorus/ fertility/ slow-release/ maize分类
资源环境引用本文复制引用
邹璇,王德汉,李亮,马磊,李东,孙永明..畜禽废水磷回收产物的磷素释放特性及肥效试验研究[J].农业环境科学学报,2011,30(5):1021-1026,6.基金项目
科技部"十一五"国家科技支撑计划重大项目(2008BADC4B04) （2008BADC4B04）
广东省科技计划项目(2008b030302044) （2008b030302044）
