期刊论文

中文

环境科学

0250-3301

2012

33

7

2475-2481

10.13227/j.hjkx.2012.07.008

国家科技攻关计划项目（2008BAD95B02）； 国家科技支撑计划项目（2011BAD16B01）；

本校为第一机构

通过大田小区实验,采用静止箱-气相色谱法对早晚两季水稻品种CH4与N2O排放通量进行了观测.结果表明,早稻CH4排放季节变化呈单峰模式,N2O排放呈双峰模式;晚稻CH4与N2O排放季节变化均呈单峰模式.CH4、N2O季节平均排放通量品种间均存在显著差异(P超级杂交稻>杂交稻.早稻无水稻种植区CH4、N2O季节排放通量分别是水稻种植区的27.1%~31.8%、33.6%~88.3%;晚稻分别是23.8%~28.8%、38.6%~45.3%.早稻适宜种植品种为陆两优819、金优402、湘早籼24号,晚稻品种为岳优9113、湘晚籼12号.

Methane and nitrous oxide emission fluxes of rice cultivars in the double cropping rice fields were measured by static chamber-gas chromatography in field experiments. The results showed a single-peak pattern in seasonal variations of methane emission and a double-peak pattern in variations of nitrous oxide emission for the early season rice, and a single-peak pattern in variations of both methane and nitrous oxide emission for the late season rice. There was significant difference among the rice cuhivars in the average emission fluxes of metha...