干旱区生态环境知识资源中心(Arid): 长期施肥对河西灌漠土有机氮组分及剖面分布的影响

Arid

	长期施肥对河西灌漠土有机氮组分及剖面分布的影响
其他题名	Effects of Long-term Fertilization on Forms and Profile Distribution of Soil Organic Nitrogen in Irrigated Desert Soil
	王克鹏 1; 张仁陟 1; 索东让 2
ISSN	0564-3945
出版年	2009
卷号	40 期号:5 页码:1092-1097
中文摘要	采用1965年Bremner提出的土壤有机氮分级方法,对25年有机肥与化肥定位试验中的土壤各剖面层次有机氮组成进行分级.结果表明,长期施用化肥和有机肥对河西灌漠土不同剖面土壤全氮和有机氮各组分有显著影响,施肥对不同形态有机氮的影响取决于肥料种类.土壤全氮及有机氮各组分含量均随土层深度的增加而降低,但有机氮各组分占全氮的比例随土层深度增加的变化却无明显规律.不同土层间土壤有机氮各组分含量的差异主要存在于0～100 cm土层,100～180 cm差异较小,180 cm以下差异很小.与单施化肥相比,在0～100 cm土层,有机肥与化肥配合施用后显著提高了土壤全氮和酸解性氮的含量.在酸解性氮中,氨基酸态氮和酸解未知氮显著增加,在0～40 cm土层氨基糖态氮含量也有所提高.与不施肥相比,施用氮肥显著提高了0～200 cm所有土层的土壤全氮、酸解性氮与非酸解性氮的含量.在酸解性氮中,化学氮肥显著提高了0～200 cm所有土层氨态氮的含量,对氨基酸氮、氨基糖氮和酸解未知态氮影响较小.
英文摘要	Organic nitrogen (N) forms in irrigated desert soil profile were quantified in a 25-year fertilization trial using the method proposed by Bremner in 1965. Results showed that soil total nitrogen and organic nitrogen fractions in soil profile were significantly influenced by long-term application of chemical fertilizer and manure and varied with fertilizer species. the contents of total N and organic N forms were decreased with layer depth, but the ration of organic N forms to total N didn’t had obvious rule. The differences of organic nitrogen forms were mainly in 0-100 cm soil layer under different fertilizer species. Organic nitrogen forms were small differences in 100-180 cm soil layer, but below 180 cm soil layer the difference was no obvious. At various soil layers, acidic hydrolysable N was the main components of the organic N. Compared with application of N and P fertilizers, manure with N fertilizers greatly increased the contents of total N and acid hydrolysable N in 0-100cm soil layer. Of the forms of acid hydrolysable N, amino acid N and hydrolysable unidentified N were significantly increased. Amino sugar N was increased also by manure with N and P fertilizers in 0-40 cm soil layer. At all the soil layer of 0-200 cm, N application significantly increased total N, acid hydrolysable N and nonhydrolysable N. Compared to the plots without N addition, N fertilizer significantly increased ammonium N but little affects amino acid nitrogen amino sugar N and hydrolysable unidentified N.
中文关键词	长期施肥 ; 土壤有机氮组分 ; 有机肥料 ; 灌漠土
英文关键词	Long-term fertilization Soil organic nitrogen fractions Organic fertilizer Irrigated desert soil
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3882601
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224275
作者单位	1.甘肃农业大学,资源与环境学院, 兰州, 甘肃 730070, 中国; 2.张掖市农科院, 张掖, 甘肃 734000, 中国
推荐引用方式 GB/T 7714	王克鹏,张仁陟,索东让. 长期施肥对河西灌漠土有机氮组分及剖面分布的影响[J]. 甘肃农业大学,2009,40(5):1092-1097.
APA	王克鹏,张仁陟,&索东让.(2009).长期施肥对河西灌漠土有机氮组分及剖面分布的影响.,40(5),1092-1097.
MLA	王克鹏,et al."长期施肥对河西灌漠土有机氮组分及剖面分布的影响".40.5(2009):1092-1097.