关键词: 金衢地区, 稻田杂草, 发生, 演替规律

Abstract: Aiming at the current situation of seriously damage of weeds and unclear weed resources in paddy fields in Jinqu area, we investigated the main weed species and damage in single-season rice and late rice among 9 counties. The results showed that there were 18 species belonging to 9 families in single rice field, among which the grass weeds and sedge families were the most, both were 5 species. There were 11 families and 24 species of weeds in the late rice fields. The Echinochloa phyllopogon （stapf） Koss., Leptochloa chinensis （L.）Nees., Echinochloa caudata Roshev., Paspalum distichum L., E.colonum （L.） Link. were important grass weeds in the paddy field, Cyperaceae weed including Cyperus difformis L.,Cyperus iria L., Juncellus serotinus （Rottb.）C.B.Clarke. Broad-leaf weeds were mainly Monochoria vaginalis（Burm.f.）Preslex Kunth., Ludwigia prostrata Roxb., Lindernia procumbens（Krock.）Philcox., Rotala indica（Willd.） Koehne..The grass weeds in Quzhou are mostly Leptochloa chinensis（L.）Nees.and E.colonum （L.） Link., while the Cyperaceae weeds were mainly Cyperus difformis L.,Cyperus iria L.,Juncellus serotinus （Rottb.）C.B.Clarke., Broad-leaf weeds are mainly weeds such as Monochoria vaginalis（Burm.f.） Preslex Kunth., Ludwigia prostrata Roxb., Lindernia Procumbens（Krock.） Philcox.. At the same time, compared with the weed survey results 20 years ago, the succession pattern of weed communities in rice fields was clarified.

Key words: Jinqu area, paddy weeds, occurrence, community succession