赫章县半夏田杂草的种类组成及群落特征

Species Composition and Community Characteristics of Weed in Pinellia ternata Field in Hezhang County

【目的】明确赫章县半夏田杂草的种类组成和群落特征,为半夏田杂草防控及综合治理提供参考。【方法】采用倒置“W”9点取样法连续3年对赫章县半夏主要种植区域杂草进行跟踪调查,分析杂草种类。【结果】赫章县半夏主产区杂草有45种,隶属于17科41属,其中优势杂草有马唐、狗尾草、牛膝菊、野艾蒿、金荞麦、尼泊尔蓼和藜共7种,区域性优势杂草有繁缕、鸭跖草和婆婆纳共3种,常见杂草8种,一般杂草27种。【结论】不同区域杂草发生种类及群落结构有所差异,但主要优势杂草发生情况相对稳定。

【Objective】In order to provide a reference for the prevention and control and comprehensive management of weed in Pinellia ternata field,the species composition and community characteristics of weed in P.ternata field is clarified in Hezhang County.【Method】The inverted"W"9-point sampling method is used to track and investigate the weeds in the main growing areas of P.ternate for three years,and then the weed species are analyzed.【Result】There are 45 weed species,belonging to 17 families and 41 genera in the area.There are 7 dominant weeds,including Digitaria sanguinalis,Setaria viridis,Galinsoga parviflora,Artemisia lavandulaefolia,Fagopyrum dibotrys,Polygonum nepalense and Chenopodium album.A total of 3 regional dominant weeds are observed,including Stellaria media,Commelina communis and Veronica didyma.8 common weeds and 27general weeds are found.【Conclusion】Although the species and community structure of weeds vary in different regions,the occurrence of main dominant weeds is relatively stable.