生态与农村环境学报 ›› 2003, Vol. 19 ›› Issue (4): 23-26,44.doi:

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湿地稻-鸭复合生态系统综合效益研究

王华, 黄璜, 杨志辉, 廖晓兰   

  1. 湖南农业大学农学院
  • 收稿日期:2003-03-02 出版日期:2003-11-10 发布日期:2011-11-07
  • 作者简介:王华(1975 —) ,女,湖南长沙人,理学硕士,讲师,主要从事生态环境与农业灾害治理的教学与研究工作。
  • 基金资助:

    国家863项目(863-306-ZD05-3-E);国家自然科学基金资助项目(39670142)

Integrated benefits of paddy rice-duck complex ecosystem

WANG  Hua, HUANG  Huang, YANG  Zhi-Hui, LIAO  Xiao-Lan   

  1. College of Agronomy,Hunan Agricultural University
  • Received:2003-03-02 Online:2003-11-10 Published:2011-11-07

摘要: 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,>0.25mm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。 

关键词: 湿地, 稻-鸭复合生态系统, 甲烷排放, 土壤肥力, 经济效益

Abstract: 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 physical characteristics of the soil in the rice-duck complex ecosystem were both improved,and redox status of the soil was also markedly meliorated.What′s more,the direct economic benefit of the rice-duck complex ecosystem was higher than that of the conventional paddy fields. 

Key words: paddy, rice-duck complex ecosystem, methane emission, soil fertility, economic benefit

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