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

摘要： 针对金衢地区水稻田间杂草危害严重、杂草资源不清的现状，对该地区9个县市区单季稻、晚稻田主要杂草发生种类、危害情况进行了调查。结果表明，金衢地区单季稻田主要杂草种类有9科18种，其中禾本科和莎草科杂草种类最多，均为5种；晚稻田杂草共调查到11科24种，稗属杂草和千金子是稻田重要禾本科杂草，莎草科杂草以异型莎草、水莎草、碎米莎草为主，阔叶杂草以鸭舌草、丁香蓼、陌上菜、节节菜为主。衢州地区禾本科杂草以千金子、光头稗居多，莎草科杂草则以异型莎草、水莎草、碎米莎草为主，阔叶杂草以鸭舌草、丁香蓼、节节菜为主。同时，与20年前杂草调查结果比较，明确了该地区稻田杂草群落演替规律。

关键词: 金衢地区, 稻田杂草, 发生, 演替规律