Effects of fertilization measures and shrub buffer on nitrogen losses of different forms in runoff water under Phyllostachys praecox stands (bamboo fields) were studied for 2 consecutive years through sampling and determination.The results showed that there was a significant positive correlation between surface runoff volume and perception in bamboo fields across different treatments.On the average,shrub buffer could reduce surface runoff volume by 32.62％.Compared to conventional fertilization treatment,reducing fertilization treatment could reduce the concentrations of total nitrogen (TN),nitrate nitrogen (NO3-) and ammonium nitrogen (NH4+) in the runoff water of bamboo fields by 39.70％,35.14％ and 47.16％,respectively,and could reduce the cumulative runoff losses of TN,NO3-and NH4+ by 34.65％,30.15％ and 41.73％,respectively.In conventional fertilization treatment,shrub buffer could reduce the concentrations of TN,NO3-and NH4+ in the runoff water of bamboo fields by 81.33％,75.78％ and 91.74％,respectively,and could reduce the cumulative losses of TN,NO3-and NH4 + by 87.49％,84.14％ and 93.99％,respectively.In reducing fertilization treatment,shrub buffer could reduce the concentrations of TN,NO3-and NH4+ in the runoff water of bamboo fields by 64.23％,59.00％ and 78.12％,respectively,and could reduce the cumulative losses of TN,NO3 and NH4+ by 79.32％,75.98％ and 86.40％,respectively.The dissolved nitrogen was the main component of runoff nitrogen in bamboo fields.Both reducing fertilization measure and shrub buffer could effectively control the nitrogen losses of different forms in runoff water of bamboo fields.
国家科技期刊平台
NSTL
万方数据
维普
