短語詞組短語shift of weed community 雜草群落演替turf -weed community 草坪crop -weed community 農(nóng)田雜草群落weed community construction 雜草群落結(jié)構(gòu)Corn -weed community 玉米weed community composition 雜草群落組成weed community structure 雜草群落結(jié)構(gòu)potential weed community 潛雜草群落weed tree forest community 雜木林群落 返回 weed community