urban weed community 城市杂草群落
Field weed community 田间杂草群落
crop-weed community 农田杂草群落
weed community structure 杂草群落结构
potential weed community 潜杂草群落
weed community structures 杂草群落结构
weed community composition 杂草群落组成
weed community construction 杂草群落结构
weed community in turf 草坪杂草群落
The paper discusses the reason and trend of weed community evolution in paddy field.
从农业生产实际出发，对水稻田杂草群落演化原因及其趋势进行了综述。
The effect of predator, parasitoid, insect pest and neutral insect groups in the arthropod community in the weed habitat on the corresponding groups in the paddy habitat were varied.
杂草地生境节肢动物群落的害虫、中性昆虫、捕食性天敌和寄生性天敌亚群落对稻田生境相应亚群落的影响程度不同。
Investigation on the weed species and control techniques were done in 2001-2003. Speices and community distribution of weed had been found in farmland in Huaibei area.
2003年，进行了农田杂草调查及防治技术研究，基本摸清了淮北地区农田杂草种类和群落分布。
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