一、发病概况 水稻细菌性条斑病属于植物检疫对象之一,是南方稻区常易发生的严重病害。我县1985年8月18日开始,先在杂交水稻制种田,后在杂交稻和常规大田中相继发生,其中有42亩重发田发病率达100％,远看火红色,虽经打药防治,亩产仍减产150多斤。当年带菌杂优种子基本内销本县,因此,病区随带菌种子扩散而扩大,老病区不少带菌稻草返田,成为下年菌 First, the incidence of disease Rice bacterial leaf streak is one of the plant quarantine objects, is often a serious disease in the southern rice area. My county began on August 18, 1985, first in hybrid rice farming, and later in hybrid rice and conventional fields have occurred, of which 42 acres of re-sent field incidence rate of 100%, far look at the red fire, although the fight drug fight , Still yield more than 150 kilos per mu. In the past year, ginseng seed was basically sold domestically in the county. Therefore, the ward spread along with the spreading of seed germs. Many of the old wards brought the straw back to the fields and became the next year’s bacteria