weed community

基本解释

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 result showed that the weed community growth succession line is the relatively independent bimodal curve.
研究结果表明：北方地区旱直播田杂草的演替呈现相对独立的双峰曲线。
Annuals weed is the main species in each field, the weed community had marked diversity among different crop fields.
各作物田以一年生杂草为主，不同作物田杂草群落有显著差异。