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1983年9月3日,益阳县堤卡子公社同光大队宋七屋场生产队和大屋湾生产队两处,发现了国内植物检疫对象——水稻细菌性条斑病 Xanthomonas oryzicola,面积3.3亩,品种余赤231-8和矮粳23,在发病高峰期9月16日调查,余赤231-8的发病蔸率100%,病株率87.3%,病叶率84.5%,病情指数43.2,矮粳23的发病蔸率26.7%,病株率
On September 3, 1983, two teams of production units at Songqiya Production Plant of Tongchuang Brigade of Tikka Sub-commune in Yiyang County and two production teams at Sai Uk Wan discovered the Xanthomonas oryzicola, a plant disease-causing disease in the country, with an area of 3.3 mu, Varieties Yuchi 231-8 and Dwarf Japonica 23 were investigated on the peak of September 16, the incidence of Yuchi 231-8 was 100%, the diseased rate was 87.3%, the diseased leaf rate was 84.5%, the disease index was 43.2, The incidence of japonica 23 was 26.7%, the diseased rate