清除杂草是小麦增产的一项重要措施。近几年,对于杂草野燕麦的危害与防除,已引起普遍重视,但对于茜草的危害与防除,还未引起应有的注意。茜草(Rubia cordifolia L.)也叫红丝线、染染草。是茜草科茜草属植物的一种,根据叶形等特征又分为几个变种。其种子繁殖能力强,生态适应性广,广泛分布于我国中部和北部。由于 The removal of weeds is an important measure of wheat yield. In recent years, the damage and control of weed wild oats has caused widespread attention, but the harm and control of madder have not drawn due attention. Rubia cordifolia L. is also called red thread and dyed grass. Rubiaceae is a genus Rubia, according to the leaf shape and other characteristics is divided into several varieties. Its seed breeding ability, ecological adaptability, widely distributed in central and northern China. due to