摘要
通过田间试验研究了滴灌条件下不同肥液浓度对土壤氮素运移影响,结果表明:(1)随着肥液浓度的增加,土壤表层的硝态氮含量也随之增加,并在湿润峰边缘累积;(2)随着肥液浓度的增加,垂直方向和水平方向上土壤含氮量都逐渐增大;(3)肥液浓度越大,表层土壤中硝态氮的淋溶效果越差,硝态氮越容易在表层积聚。以上研究结果可以作为滴灌技术的发展与推广提供一定的理论依据。
Field experiments were conducted to study the effects of different manure concentrations on soil nitrogen transportunder drip irrigation.The results showed that:(1)With the increase of the fertilizer concentration,nitrate nitrogen content in surfacesoil is also increased,and accumulated in the humid peak edge;(2)With the increase of the fertilizer concentration,the horizontaland vertical direction on the soil nitrogen content gradually i ncreased;(3)The fertilizer concentration increases,the effect of leachingof nitrate nitrogen in the surface soil is worse,nitrate accumulation in the surface more easily.The above research results can providea theoretical basis for the development and promotion of drip irrigation technology.
作者
马超
Ma Chao(Hydropower College, Hebei University of Engineering,Hebei Handan 056000)
出处
《南方农机》
2017年第18期168-168,共1页
关键词
滴灌
肥液浓度
氮素运移
Drip irrigation
Fertilizer solution concentration
Nitrogen transpo
