论文部分内容阅读
水稻细菌性条斑病是国内水稻重要检疫对象,发病后轻则影响产量1～2成,最严重的可引起塌圈枯死。该病1962年在龙海县首先发生,接着福清、长乐、闽侯、仙游等县相继发病。随着耕作制度的改革,品种的更换,病情发生逐年减轻,至70年代、几至匿迹。进入80年代,由于杂交稻的大面积推广、品种频繁南制,内检工作不严等原因,该病在龙海县重新抬头,1983年晚季大暴发,发病面积达13000多亩。1987年晚季仅仙游县发病面积达55000余亩。据统计,至1990年全省已有50余县发病,面积达55万亩。
Rice bacterial leaf streak is an important domestic quarantine object of rice, after the onset of light affect the yield of 1 to 2 percent, the most serious can cause collapse collapse. The disease first occurred in Longhai County in 1962, followed by Fuqing, Changle, Minhou, Xianyou and other counties have one after another. With the reform of the farming system and the replacement of breeds, the incidence of diseases has been lessened year by year. By the 1970s, few had disappeared. Into the 80s, due to the large-scale promotion of hybrid rice, frequent south varieties, internal inspection and other unscrupulous reasons, the disease recurred in Longhai County, the outbreak in late 1983, the incidence of up to 13,000 acres. In late 1987, only Xianyou County incidence of more than 55,000 acres. According to statistics, by 1990, the province had more than 50 county incidences, with an area of 550,000 mu.