层施保水剂不同高度对土壤硝态氮运移的影响  

Layer Water-retaining Agent of Different Heights Applied on Soil Nitrate Nitrogen Transport

作　　者：王爱滨 Wang Aibin(North China University of Water Resources and Hydropower,Zhengzhou 450046,Henan)

机构地区：[1]华北水利水电大学,河南郑州450046

出　　处：《陕西水利》2020年第1期4-6,共3页Shaanxi Water Resources

摘　　要：通过室内层施保水剂的毛管水上升试验分析层施不同高度保水剂对毛管水上升和硝态氮运移的影响。结果表明:在土壤容重、初始含水率和硝酸铵浓度相同的情况下,层施保水剂的高度越高含水率越大,对硝态氮运移的影响也越明显;硝态氮在土壤中的的运移与水分的传输有着密切的关系。Capillary water rise test with water-retaining agent applied in the indoor layer was used to analyze the effects of water-retaining agent with different heights on capillary water rise and nitrate nitrogen transport. The results show that under the same soil bulk density, initial water content and ammonium nitrate concentration, the higher the height of the layer of water-retaining agent, the greater the water content, and the more obvious the effect on nitrate nitrogen transport;nitrate nitrogen in the soil. The transport of water is closely related to the transport of water.

关 键 词：保水剂 硝态氮 毛管水 

分 类 号：S152.7[农业科学—土壤学]