Effects of option mitigating ammonia volatilization on CH4 and N2O emissions from a paddy field fertilized with anaerobically digested cattle slurry
Effects of option mitigating ammonia volatilization on CH4 and N2O emissions from a paddy field fertilized with anaerobically digested cattle slurry
复制标题
DOI：
10.1007/s00374-010-0465-9
复制
发表时间：
2010-06
影响因子：
6.5
通讯作者：
K. T. Win;R. Nonaka;K. Toyota;T. Motobayashi;M. Hosomi
中科院分区：
文献类型：
--
作者：
K. T. Win;R. Nonaka;K. Toyota;T. Motobayashi;M. Hosomi
采用蒸渗仪试验研究了单独添加厌氧消化牛粪（ADCS）、添加木醋液（WV）和添加较高水平的洪水（HFW）对稻田土壤CH 4和N2 O排放的影响。试验设4个处理：（1）化肥、（2）ADCS、（3）ADCS + WV和（4）ADCS + HFW，其中后一处理的淹水高度为10 cm，其它处理的淹水高度为3 ~ 4 cm。每个处理的土壤氮肥添加量为30 g NH 4 +-N m−2（分为一次基施和两次追肥）。在整个生长季中，ADCS处理的氨挥发量为2.7 g NH3-N m-2，ADCS + WV和ADCS + HFW处理的氨挥发量分别显著减少了79%和55%。无论是通过添加木醋液还是通过增加洪水高度来减缓NH3挥发，ADCS处理在生长季的CH 4排放总量都没有显著增加。在生长期，所有处理的N2 O排放量均可忽略不计。
A lysimeter experiment was carried out to evaluate the effects of the NH3volatilization mitigation by adding anaerobically digested cattle slurry (ADCS) alone, with wood vinegar (WV) or with a higher level of floodwater (HFW), on emissions of CH4and N2O from a paddy soil planted with fodder rice. We have carried out the following treatments: (1) chemical fertilizer, (2) ADCS, (3) ADCS + WV, and (4) ADCS + HFW; the height of floodwater was 10 cm in the latter treatment, and it was 3 to 4 cm in the other treatments just before fertilizer applications. Nitrogen fertilizer rate added to soil in each treatment was 30 g NH4+–N m−2(split in one basal and two top-dressing additions). Ammonia volatilization in the ADCS treatment was 2.7 g NH3–N m−2throughout the growing season, and it was significantly reduced by 79% and 55% in the ADCS + WV and ADCS + HFW treatments, respectively. The total amount of CH4emitted in the ADCS treatment in the growing season was not significantly enhanced by the mitigation of NH3volatilization either by adding wood vinegar or by increasing the height of the floodwater. Negligible N2O emissions were observed in all treatments during the growing period.