|
| Influences of nitrogen forms on soil NO2emissions and vegetable yield |
| |
| DOI： |
|
| Hits: 1732 |
| Download times: 602 |
| Abstract: |
| A plot experiment was conducted to determine different nitrogen forms，including urea，calcium nitrate
and ammonium sulfated，on N2O emissions，vegetable yield and nitrate concentration. The results showed that applying
different forms of nitrogen fertilizer could increase N2O emissions，the peak of N2O emissions appeared in 2-3 days after
fertilizer，the peak of N2O emissions in treatments of urea，calcium nitrate and ammonium sulfated were 0.22，0.18 and
0.14 mg/m2·h，respectively. After 6 days，N2O emissions decreased to the control level. The dry matter accumulation
and vegetable nitrogen content were significantly different between the control and the treatments，but there was no
remarkable difference in dry matter accumulation among different nitrogen form treatments. The results indicated that the
application of ammonium nitrogen（ammonium sulfate）could effectively reduce N2O emissions，while ensure the yield
of vegetable. |
|
View Full Text
View/Add Comment Download reader |
