连续施用炭基肥及生物炭对棕壤有机氮组分的影响

发布时间：2018-03-23 02:35

本文选题：炭基肥　切入点：生物炭　出处：《生态学杂志》2017年10期 　论文类型：期刊论文

【摘要】：为了揭示连续施用炭基肥及生物炭条件下棕壤有机氮组分的变化情况,本文基于田间定位试验,研究了连续定位施用炭基肥及生物炭对棕壤有机氮组分的影响。试验共设置5个处理:不施肥、低量生物炭、高量生物炭、氮磷钾配施、炭基肥。于2014年花生收获后每个小区按"S"型设置3个采样点,采集0~20、20~40 cm的土壤样本,利用Branmer有机氮分组方法对土壤有机氮组分进行测定与分析。结果表明:经过连续4年的不同施肥处理,不同处理土壤全氮含量均有所提升;炭基肥处理土壤全氮含量显著高于原始土和CK处理,增幅分别达到69.8%、4.8%;不同施肥处理中有机氮各组分的含量顺序为酸解铵态氮氨基酸态氮非酸解氮酸解未知态氮氨基糖态氮;施用炭基肥显著增加了土壤酸解有机氮中酸解铵态氮、氨基酸态氮的含量,与原始土相比增加了65.9%、128.0%;随着生物炭用量的增加,酸解铵态氮含量处于增加趋势,但增加幅度远低于等碳投入的炭基肥处理;对于未知态氮、非酸解有机氮总量无论施用生物炭、氮磷钾化肥或炭基肥均提高了其含量,但各处理间差异不显著;连续施用炭基肥或生物炭显著提高了土壤酸解有机氮中酸解铵态氮和氨基酸态氮的含量,促进了氮素的活化,有利于花生中低产田氮素的吸收和运转。
[Abstract]:In order to reveal the changes of organic nitrogen components in brown soil under the condition of continuous application of carbon based fertilizer and biological carbon, this paper based on the field location experiment. The effects of continuous location application of carbon base fertilizer and biochar on organic nitrogen components in brown soil were studied. Five treatments were set up in the experiment: no fertilization, low biomass carbon, high biomass carbon, combined application of nitrogen, phosphorus and potassium. Carbon based fertilizer. After the peanut harvest in 2014, 3 sampling sites were set up in each plot according to "S" type, and the soil samples were collected from the soil samples of 0 ~ (20) ~ (20) ~ (20) ~ (40) cm. Soil organic nitrogen components were determined and analyzed by Branmer organic nitrogen grouping method. The results showed that the total nitrogen content of different treatments increased after 4 years of continuous fertilization. The content of total nitrogen in carbon based fertilizer treatment was significantly higher than that in original soil and CK treatment, the increase was 69.8% and 4.8% respectively, and the order of organic nitrogen components in different fertilization treatments was that the content of amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen, amino acid nitrogen and amino acid nitrogen. Application of carbon based fertilizer significantly increased the content of ammonium and amino acid nitrogen in soil acidolysis organic nitrogen, and increased 65.9% ~ 128.0% compared with the original soil, while the content of ammonium nitrogen in acidolysis increased with the increase of the amount of biochar. However, the increase range was much lower than that of carbon based fertilizer with equal carbon input, and the total amount of non-acidolysis organic nitrogen, no matter the application of biochar, nitrogen, phosphorus, potassium fertilizer or carbon base fertilizer, increased its content, but there was no significant difference among the treatments. Continuous application of carbon based fertilizer or biochar significantly increased the content of ammonium and amino acid nitrogen in soil acidolysis organic nitrogen, promoted the activation of nitrogen, and was beneficial to the absorption and transport of nitrogen in peanut field.
【作者单位】：沈阳农业大学土地与环境学院土壤肥料资源高效利用国家工程实验室/农业部东北玉米营养与施肥科学观测实验站;
【基金】：国家自然科学基金项目(41371287) 国家现代农业产业技术体系建设专项(CARS-14) 公益性行业专项(201203030-04-03)资助
【分类号】：S153.6

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