旱育秧田草相特点及其化学防治水稻肥床旱育稀植是水稻栽培技术的一次革命。但随育秧形式的改变，田间草相变化，草害防除成为这一新技术推广的障碍。据近２ａ对旱育秧不同秧田草相的调查，有杂草１９种，分属１３科，以旱、湿生性杂草为主，主要优势种为鳢肠、马唐、稗草... Characteristics of dry grass seedling and its chemical control of rice paddy dry cultivation and sparse planting is a revolution in rice cultivation technology. However, with the change of the form of seedling transplanting, the change of grass and herbaceous phase in the field has become the obstacle to the popularization of this new technology. According to a survey of nearly two-thirds of the grass seedlings of dry seedlings, 19 species of weeds were found, which belonged to 13 families. The main dominant species were Daphniptera, Crabgrass, Barnyardgrass ...