
植物营养与肥料学报2011,17(3):651-656 Plant Nutrition and Fertilizer Science
畜禽粪便中所含尿囊素在土壤中的动态变化
及原因分析
张健12,关连珠2*,颜丽2
(1山西农业大学资源环境学院,山西太谷030801;2沈阳农业大学土地与环境学院,辽宁沈阳110866)
摘要:采用室内模拟培养试验,研究了畜食类便中尿囊素在土壤中含量的动态变化规律。结果表明,畜禽类便所含尿囊素在土壤中降解快速,但不同种类和用量处理的变化速度和幅度不同。180d时,鸡粪和猪粪处理降解率可达 95.59%、90.83%。降解率与用量量负相关,与时间吴正相关,其与时间的关系可以用=A+BInt间归方程拟合。尿囊素在土填中的降解受微生物和其他非生物学共同作用,微生物作用占主导地位,微生物降解量占减少总量的 78%。畜禽类便中的尿囊素随着时间的延长,依靠其自身分解和微生物等作用降解而逐渐减少,但在短期内可能产生环境危害。
关键词:畜禽粪便;尿囊素;土填
中图分类号:S141.2
文献标识码:A
文章编号:1008505X(2011)030651-06
Dynamicsofallantoinconcentrationofdifferentmanuresin
soil and mechanism investigation ZHANG Jian'-2, GUAN Lian-zhu2*, YAN L?
(I College of Resource and Enuironment,Shanzi Agricultural Unisersity,Taigu 030801,China; 2 College of Land and Emironment, Shenyang Agricultural University, Shenyang I10866, China)
Abstract: Simulated indoor incubation experiment was carried out to explore the dynamics of allantoin( All) in dif-ferent manures. The results show that All from different manures is quickly degraded in soil, and the degradation rate and degradation percentage are significantly different for different antibiotics with different concentrations. At 180th day, the highest All degradation percentages of chicken feces and pig feces reach to 95. 59% and 90. 83% respectively. The degradation percentage is negatively correlated with the amount of manures used and positively correlated with incubation time (u =A + B Int). Microbiological decomposing plays an important role in the process of degradation, and accounted for about 78%. Therefore, the concentration of All is declined through microbiologi-cal degradation and others, but it may have the risk of environmental at a short time after the manures entering the soil.
Key words: livestock and poultry manure; allantoin; soil
畜禽粪便是农业面源污染的主要来源"。尿囊素(Allantoin)作为嘌呤代谢的最终产物广泛存在于动物粪便,对植物的生长发育有很大的影响[3]。国家环境总局2001年调查显示,我国大多数规模化畜禽养殖场缺少环境治理和综合利用设施,畜禽粪便会不经要善处理直接排入环境,对土壤,水
收稿日期:2010-09-18
接受日期:2011-02-18
基金项目:国家自然科学基金(No,40901259)资助。
体造成严重污染,危害畜禽及人体健康"]。随畜禽粪便进人土壤的尿囊索在土壤中的留存与分解状况不但可以预示尿囊素的环境风险,而且可能影响作物的生长状况。目前,有关尿囊素研究主要集中在畜禽粪便堆腐过程中其含量的变化或纯品尿囊素在土壤中的变化规律。如纯品尿囊素和有机肥腐解过
作者简介:张键(1982-),女,山西祁县人,博士研究生,主要从事土接肥力、生态与环境方面的研究。E-mail:tuta.55@163.com
*通讯作者E-mail:glz1960@163.com
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