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Research on Variety of Soil Organic Nitrogen Components in Artificial Herbage Land on Loess Plateau
Authors
彭令发
李丽霞
郝明德
Publication date
1 January 2003
Publisher
Abstract
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 4 13.5 5 m g/ kg、5 8.39mg/ kg、16 9.83m g/ kg和 10 7.0 1mg/ kg;NPM处理土壤耕层水解总氮与对照相比增加 192 .5 8mg/ kg、氨基酸氮增加 2 2 3.4 4 mg/ kg、氨基糖氮增加 2 5 .6 6 m g/kg,而氨态氮含量则大幅度降低 ;在 6 0~ 10 0 cm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
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/2100
Last time updated on 21/09/2018