冀西北亚麻田杂草群落结构及防控技术  

Structure of weed communities in flax fields and its controlling techniques in northwest Hebei province

作　　者：刘洋[1] 康爱国 张玉慧 赵志英 李文清 

机构地区：[1]南京信息工程大学,江苏南京210044 [2]河北省康保县植保植检站,河北康保076650

出　　处：《中国植保导刊》2016年第5期35-39,共5页China Plant Protection

摘　　要：2012—2014年连续调查表明,冀西北亚麻田杂草种类约33种,隶属于15科。以狗尾草、藜、卷茎蓼、萹蓄、野黍、苦荞、苣荬菜、草地风毛菊等为优势种群。同一生态区域不同年份、不同地势杂草群落结构存在差异。近年来亚麻田狗尾草、野黍、苣荬菜、草地风毛菊等杂草比例上升,传播蔓延加快。根据亚麻与杂草生长指标对比,亚麻田除草最佳时期为亚麻苗期株高6~8 cm时。通过采取农业措施及化学防除相结合的综合防治技术,可有效控制亚麻田草害发生与危害。According to systematic surveys from 2012 to 2014, thirty-three weed species belonging to 15 families were found in flax fields in northwest Hebei province. The dominant species mainly included Setaria viridis （L.） Beauv., Chenopodium album L., Polygonum convolvulus L., Polygonum aviculare L., Eriochloa villosa （Thunb.） Kunth, Fagopyrum tataricum （L.） Gaertn., Sonchus brachyotus DC. and Saussurea amara. Within the same eco-region, structure of weed communities in flax fields varied among years or diverse eco-regions. In recent years, some weeds, such as S. viridis, E. viUosa, S. brachyotus and S. amara, were increasing in proportion and spreading rapidly. Growth comparative trail on flax and weeds was also implemented, and the results indicated that critical period for prevention and controlling against weed was fiax＇s seedling stage with height of 6 -8 cm, Adopting an integrated management with agricultural and chemical control methods, weeds could be effectively controlled in flax fields.

关 键 词：亚麻田 杂草 优势种群 防除 

分 类 号：S451.1[农业科学—植物保护]