[1]李丽霞,郝明德,彭令发.黄土区人工牧草地有机氮组分变化研究[J].水土保持研究,2003,10(01):55-57,84.
　LI Li-xia,HAO Ming-de,PENG Ling-fa.Research on Variety of Soil Organic Nitrogen Components in Artificial Herbage Land on Loess Plateau[J].Research of Soil and Water Conservation,2003,10(01):55-57,84.
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黄土区人工牧草地有机氮组分变化研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 10 期数: 2003年01期 页码: 55-57,84 栏目: 出版日期: 1900-01-01
Title:
Research on Variety of Soil Organic Nitrogen Components in Artificial Herbage Land on Loess Plateau
作者:
李丽霞1, 郝明德2, 彭令发1,2
1. 西北农林科技大学资环学院;
2. 中国科学院水利部水土保持研究所, 陕西杨陵 712100
Author(s):
LI Li-xia1, HAO Ming-de2, PENG Ling-fa1,2
1. Department of Resources and Environmental Science, Northwestern Sci-tech University of Agriculture and Forestry, Yangling 712100, Shaanxi, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China
关键词:
长期定位试验; 人工牧草地; 土壤有机氮素组分
Keywords:
long term oriented experiment; artificial herbage land; soil organic components
分类号:
S158.3
摘要:
黄土区人工牧草地18年苜蓿连作对土壤耕层水解总氮、氨态氮、氨基酸氮及氨基糖氮含量有很大影响，不施肥条件下苜蓿连作能明显增加土壤耕层水解总氮、氨基酸氮和氨基糖氮含量。连续施P处理根层水解总氮、氨态氮、氨基酸氮和氨基糖氮含量分别比对照增加413.55mg/kg、58.39mg/kg、169.83mg/kg和107.01mg/kg；NPM处理土壤耕层水解总氮与对照相比增加192.58mg/kg、氨基酸氮增加223.44mg/kg、氨基糖氮增加25.66mg/kg，而氨态氮含量则大幅度降低；在60～100cm不同处理的各形态氮含量接近且随土层加深逐渐减少。粮草轮作系统中不同苜蓿生长年限对土壤的水解总氮、氨态氮和氨基酸氮含量有增加的作用。
Abstract:
Continually planting 18 year alfalfa continuous cropping has important effect on soil hydrolysable N, ammoniacal N, aminoacid N, and amino sugar N in region of Loess Plateau, and alfalfa can increase evidently contents of hydrolysable N, aminoacid N and amino sugar N in topsoil under non fertilization compared with CK.Long term applying P separately increases contents of hydrolysable N, aminoacid N and amino sugar N in topsoil by 415.55 mg/kg, 58.39 mg/kg, 169.83 mg/kg and 107.01 mg/kg;NPM separately increases hydrolysable N, aminoacid N and amino sugar N in topsoil by 192.58 mg/kg, 223.44 mg/kg and 25.66 mg/kg, but ammoniacal N content is decreased.N components contents of different treatments vary little within 60~100 cm soil layers and gradually decrease with the depth of soil layers.Experiments show that different alfalfa ages can evidently increase soil hydrolysable N, ammoniacal N and aminoacid N contents in food grass rotation systems.

参考文献/References:

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备注/Memo

收稿日期:2002-11-25
基金项目:中国科学院知识创新工程项目（KZCX2-413）；国家科技攻关项目（2001BA508B18）
作者简介:李丽霞（1979- ），女，山东东营人，硕士，主要从事植物营养研究。

更新日期/Last Update: 1900-01-01