摘要
结合盆栽实验,对稻田土壤氮素矿化的几种方法进行了比较,结果表明:KC I煮沸法和碱解氮法是很好的测试土壤供氮能力的方法,淹水培养法矿化氮量与植物全氮含量相关性不高;而采用淹水培养间歇淋洗法和淹水密闭连续培养法对稻田土壤进行土壤氮素矿化的淋溶试验,结果表明:淋洗有利于土壤氮素的矿化过程。
Paddy soil samples were used for the analysis of soils nitrogen mineralization using several pot experiment methods, which includeds boiling KCl, hydrolyzable ＆ waterlogged incubation. The correlation between the nitrogen content of soil by the boiling KCl ＆ hydrolyzable methods and the total nitrogen in plants was significant, but there were no significant relations between the amounts of nitrogen mineralized from soils in the waterlogged incubation and the total nitrogen amount in the plants. Paddy soil samples were used for the analysis of soils nitrogen mineralization with two experiment methods, including waterlogged incubation and waterlogged incubation plus intermittent leaching, and we found that leaching was beneficial to soil mineralization.
出处
《土壤通报》
CAS
CSCD
北大核心
2005年第5期675-678,共4页
Chinese Journal of Soil Science
基金
国家高等学校博士学科点专项科研基金资助项目"水稻水氮耦合动态模拟和氮肥管理决策支持系统研究"
关键词
水稻土
氮素
矿化
淋溶
Paddy soil
Nitrogen
Mineralization
Leaching
