1、看麦娘
又名牛头猛,山高梁,道旁谷。为上海菜田较为常见的杂草,上海地区一般8~9月出苗,10~11月进入发生高峰期,翌年4~8月为花果期。
![](https://iknow-pic.cdn.bcebos.com/14ce36d3d539b600e33148d7f950352ac75cb7d7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、马唐
它的种子传播快,繁殖力强,植株生长快,分枝多。因此,它的竞争力强,广泛生长在田边、路旁、沟边、河滩、山坡等各类草本群落中。
![](https://iknow-pic.cdn.bcebos.com/d439b6003af33a873292477ad65c10385243b5d7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、荩草
一年生细弱草本植物。生于山野地区,除供放牧外,它的汁液可作黄色染料,纤维可作造纸原料。
![](https://iknow-pic.cdn.bcebos.com/3b87e950352ac65ccefa2113ebf2b21192138ad7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、小飞蓬
常生长于旷野、荒地、田边和路旁,为一种常见的杂草。已列入中国外来入侵物种名单(第三批)。
![](https://iknow-pic.cdn.bcebos.com/e850352ac65c10388c8189a2a2119313b17e89d7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、鸭跖[zhí]草
别名碧竹子、翠蝴蝶、淡竹叶等,产云南、四川、甘肃以东的南北各省区。
![](https://iknow-pic.cdn.bcebos.com/11385343fbf2b21171d1c22eda8065380dd78ed7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)