杂草植株。但间断性的耕作可能会加剧某些多年生杂草的发生,因为它将杂草的根茎或块茎斩成断节,使每节都有可能长成新的植株。此外,耕作农具可以将杂草碎段和种子扩散到整个地块,或从一块地扩散到另一块地。从上述角度讲,耕作促进了杂草的扩散。耕作可使杂草种子垂直和水平移动 Weed plants. However, intermittent farming may exacerbate the occurrence of certain perennial weeds because it cuts the weeds’ rhizomes or tubers into pieces, making it possible to grow new plants at each node. In addition, tillage tools can spread weed fragments and seeds throughout the patch or from one piece to another. From the above perspective, farming promotes the spread of weeds. Tillage allows weed seeds to move vertically and horizontally