吉林农业大学学报2009，Vol.31Issue(6)：720-724,728,6.
旱地新型土壤供氮力指标——氯仿熏蒸浸提氮
A New Index for Nitrogen Supplying Capacity in Arid Land-Fumigation-Extraction with Chloroform
摘要
Abstract
A study has been conducted to determine nitrogen supplying capacity in simulation of arid soil by pot experiment with chloroform fumigation-extraction method. The content of ammonium nitrogen, nitration nitrogen and total nitrogen were determined to study the relationship between uptake nitrogen by ryegrass and nitrogen content of different forms. The results showed a good correlation between uptake nitrogen by ryegrass and chloroform fumigation-extraction nitrogen under different fertilizer treatments. There was significant relativity between the content of chloroform fumigation extraction of nitrate, organic nitrogen and N uptake, with the correlation coefficient of 0.938 and 0.942, respectively. The chloroform fumigation extraction of soil total nitrogen can fully and reliably reflect the ability of soil nitrogen supplying, indicating that it is a satisfactory index of chloroform fumigation-extraction to evaluate nitrogen supplying capacity, and can be used to estimate nitrogen supplying capacity in farmlands. Chloroform fumigation-extraction method suitable for determinating soil available nitrogen, in various types of soil, including alkaline soil and paddy soil.关键词
棕壤/潮棕壤/供氮力/氯仿熏蒸浸提氮Key words
brown soil/ aquic brown soil/ nitrogen supplying capacity/ chloroform fumigation-extraction nitrogen分类
农业科技引用本文复制引用
宇万太,姜子绍,马强,周桦..旱地新型土壤供氮力指标——氯仿熏蒸浸提氮[J].吉林农业大学学报,2009,31(6):720-724,728,6.基金项目
中国科学院知识创新项目(KZCX2-YW-407、KZCX2-YW-405),国家支撑计划项目(2006BAD05B05),国家自然科学基金项目(40701067) （KZCX2-YW-407、KZCX2-YW-405）
