期刊论文

中文

生态与农村环境学报

1673-4831

2003

19

4

23-26,44

10.3969/j.issn.1673-4831.2003.04.006

(863-306-ZD05-3-E):国家高技术研究发展计划(863计划) (39670142):国家自然科学基金

本校为第一机构

2000年3月至2001年10月在湖南长沙进行了湿地稻 - 鸭复合生态系统综合效益的小区试验.结果表明,实行稻 - 鸭生态种养显著降低稻田甲烷排放量,与常规稻田相比,甲烷排放总量在早稻田与晚稻田分别降低44.2%和40.7%.各处理晚稻田甲烷排放总量高于早稻田甲烷排放总量.养鸭稻田与常规稻田相比,土壤肥力都有所增加,土壤容重降低,＞0.25 mm团聚体增加2.65～3.12百分点,土壤结构系数增加2.56～6.63百分点.同时,稻田土壤氧化还原状况也得到明显改善.湿地稻 - 鸭复合生态系统直接的经济效益也远高于常规稻田.

Integrated benefits of rice-duck complex ecosystem,including reduction of methane emission and other eco-economic benefits,were studied by adopting plot experiments.The results showed that compared with conventional paddy fields,the pattern of rice-duck ecological planting and breeding significantly reduced the total amount of methane emission from paddy fields,by 44.2% for early rice and 40.7% for late rice.Methane emission was higher from late rice fields than from early rice fields,in all treatments.At the same time,soil fertility and physic...