近年来我县稻田大面积推广丁草胺除草,取得明显成效,特别是对以稗草为主的早稻田;而山垅田、烂泥田和中、晚稻田,多以矮慈菇、鸭舌草、节节菜等阔叶性杂草为优势种,单用丁草胺难以凑效,因此我们引进了稻无草（农得时）,进行试验示范,效果显著。 In recent years, we popularize butachlor herbicides on a large area in paddy fields of our county, and achieved remarkable results, especially on the early rice fields dominated by barnyardgrass. In the mountain fields, muddy fields and middle and late paddy fields, , Weeds and other broad-leaved weeds as the dominant species, single with butachlor difficult to work together, so we introduced the rice grass (agricultural time), the pilot demonstration, the effect is remarkable.