三棱草,学名扁杆藨草,莎草科,藨草属,是苏北稻区的一种多年生恶性杂草,在全国大部分稻区也有分布。我场自1966年起对其发生规律进行观察,并开展了化学除草试验,防效良好,现将十余年来的工作结果简报于后。 Sanxiancao, the scientific name flat rod grass, Cyperaceae, Scirpus is a perennial vicious weed in the northern Jiangsu region, also distributed in most of the rice area. My field since 1966 from the observation of its occurrence, and conducted a chemical weeding test, good control effect, now more than 10 years of work results briefed later.