摘要
[目的]调查直播稻杂草种群分布,为今后杂草防控工作提供科学依据。[方法]在浙江省萧山区的直播晚稻田取点调查发生杂草种群动态、杂草发生田块面积及杂草稻发生情况,分析直播晚稻田杂草发生情况。[结果]杂草种群调查结果显示,萧山区直播稻田常见杂草有20种,分属10科。根据杂草的相对均度、相对密度、相对频度、相对盖度和相对多度综合分析,直播稻田优势草种是耳叶水苋、稗草、千金子、陌上菜和雨久花,这5个草种应是今后防除的主要目标草种。[结论]浙江省萧山区直播晚稻田优势草种为耳叶水苋、稗草、千金子、陌上菜和雨久花,应加强防控。
[Objective]The aim was to investigate weed populations distribution in direct seeding late rice field,and pro- vide scientific basis for future weed pre- vention and control work. [Method]The weed populations dynamics, field area of weeds occurrence and occurrence of weedy rice were investigated, and the weeds occurrence were analyzed, by tak- ing point survey in direct seeding late rice field of Xiaoshan District. [Result] The weed populations survey results showed that there were 20 species weeds in seeding rice field of Xiaoshan District, which belonging to 10 families. According to comprehensive nanalysis of the relative degrees, the relative density, relative frequency, relative cover and rel- ative abundance, the advantage weeds were A mmannia arenarid H., Echinochlo a crusgalli （L.）Beauv., Leptochloa chi- nensis （L.）Nees, Lindernia procumbens （K.rock.）Philcox and Monochoria kor- sakowii Regel et Maack,which should be the main objectives of the future control- ling weeds. [Conclusion] The advantage weeds in Xiaoshan District of Zhejiang Province were Ammannia arenarid H., Echinochloa crusgalli （L.）Beauv., Lep- tochloa chinensis （L.）Nees, Lindernia procumbens （Krock.）Philcox and Mon- horia korsakowii Regel et Maack,and should strengthen the prevention and control.
出处
《农业灾害研究》
2013年第1期1-3,6,共4页
Journal of Agricultural Catastrophology
基金
萧山农业科技创新项目[2012(Bn01)]
关键词
杂草种群
直播稻田
晚稻
Populations of weeds
Direct seeding rice field
Late rice
