摘要
在试验基础上 ,分析讨论了温室滴灌条件下铵态氮的转化迁移规律。研究表明滴灌条件下铵态氮主要在扩散机理作用下迁移速度缓慢 ,迁移距离小 ,在近离滴头附近的表层土壤中显著聚集。就吸附作用和硝化作用对铵态氮转化迁移规律的影响作了定量讨论。
An experiment was carried out to investigate NH 4 +N transformation and transport under drip irrigation in greenhouse. Results indicate that the transformation and transport of NH 4 +N are driven mainly by diffusion effects. The transport process was conducted with low speed and within a small range in the soil under drip irrigation, and the NH 4 +N accumulation occurred mainly in a small size under the emitter. In addition, the effects of sorption and nitrification on NH 4 +N transformation and transport also were analyzed quantitatively in this paper.
出处
《灌溉排水学报》
CSCD
北大核心
2003年第1期48-52,共5页
Journal of Irrigation and Drainage
基金
中华农业科教基金资助项目 ( 2 0 0 10 1E0 3 )
关键词
温室滴灌
铵态氮
转化迁移
吸附作用
硝化作用
drip irrigation
NH 4 +N
transformation and transport
sorption
nitrification
