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Details of the paper
| Title |
Influence of rice-duck farming and other weed management strategies on the composition and species diversity of weed community in paddy fields |
| Author |
Shouhui Wei, Sheng Qiang, Bo Ma, Jiguang Wei,Jianwei Chen, Jianqiang Wu, Tongzhou Xie, Xiaokun Shen |
| Keywords |
rice-duck farming, manual weeding, chemical weeding, species diversity, evenness, similarity |
| Journal |
Chinese Journal of Applied Ecology |
| Year,Vol,No |
2005,16(6) |
| Pages |
1067-1071 |
| Abstract |
Field studies were conducted to evaluate the influence of 3 different weed management strategies, rice-duck farming (RD), manual weeding (MW) and chemical weeding (CW), on the characterization of weed communities and its control effects on weed species in paddy fields by method of community ecology. The results showed that under rice-duck farming system, weed density decreased significantly and its control effects on dominant weed species in paddy fields such as Monochoria vaginalis, Cyperus difformis, Sagittaria pygmaea are all above 95%, and the overall effect is higher than CW and MW. In RD, the species richness and Shannon-Wiener diversity indices decreased slightly, but the Pielou community evenness indices showed marked increase, which indicated that the species composition of weed community was greatly improved and the infestation of former dominant weed species was reduced. The structure of the weed community in paddy fields changed under different weed management strategies, Lindernia procumbens, Cyperus difformis and Fimbristylis miliacea constituted the major weed community under RD and the Whittaker index was significant higher than CW, MW and CK, indicated that rice-duck farming has great impact on the structure of the weed community. From Sorensen¡¯s community similarity indices and cluster analysis using Sorensen¡¯s index as the distance measurement, the same conclusion could be drawn. |
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2005 © Weed Research Laboratory,
Institute of Plant Protection, Chinese Academy of Agricultural Sciences
Address: No 2 West Yuanmingyuan Road, Haidian District, Beijing Postcode:
100094
Telephone: (010)62815937 Email: SHWEI@WSSC.ORG.CN
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