CHEN Ke-liang, ZHU Xiao-dong, ZHU Bo, et al. Load and Output Character on Non-Point Nitrogen from Purple Soil Farmlands in Hilly Area of Central Sichuan Basin[J]. 2006, 20(2): 54-58.
CHEN Ke-liang, ZHU Xiao-dong, ZHU Bo, et al. Load and Output Character on Non-Point Nitrogen from Purple Soil Farmlands in Hilly Area of Central Sichuan Basin[J]. 2006, 20(2): 54-58.DOI:
Nitrogen non-point sources pollution researches from purple soil cropland were carried out in Yanting agro-ecological station(CAS) watershed.Nitrogen output and transportation observation was conducted in surface runoff plots of different purple soil farmlands.Nitrogen concentrations and forms of runoff were monitored twice a month with two replicates.Nitrogen pollution load was calculated based on above observed and investigated data.Impact of non-point sources pollution of nitrogen on the environment was discussed here.Results showed
In the upland runoff
particle nitrogen contributes 35% to total nitrogen(TN).Average concentration of total nitrogen in farmland runoff was in following sequence: SNTRCS(seasonal no-tillage ridge cropping system)