论文部分内容阅读
近几年来,荆州专区各地棉产区有不少棉田,在棉花进入盛花期后,发生棉叶萎蔫脱落,棉株成片死亡的早期雕枯现象,使棉花产量和品质都受到严重的影响。据调查了解,1959年荆州专区开始零星发生棉花雕枯病,1960年天门县小庙公社发病重的棉田占棉田总面积13.46%,发病中等的占35%以上。1963午荆州专区发病面积,据10个县不完全统计为59万多亩,占全区棉田总面积18%左右。同年,天门县发病重的棉田病害株率为20—58%,减产约10%;京山县永隆区发病严重棉田,病株率为29—64.5%,减产约4%;沔阳县发病重的棉田,病害株
In recent years, there are many cotton fields in the cotton producing areas around Jingzhou prefecture. After withering cotton, the wilting and falling of cotton leaves and the early carving of cotton plants into pieces have seriously affected the yield and quality of cotton. According to the survey, in 1959 Jingzhou Prefecture began sporadic cotton carving withered blight. In 1960 Tianmen County Small Temple Commune heavy cotton fields accounted for a total area of 13.46% of cotton fields, accounting for more than 35% of moderate incidence. In 1963, the morbidity area of Jingzhou area was less than 590000 mu according to the incomplete statistics of 10 counties, accounting for about 18% of the total cotton area in the whole area. In the same year, Tianmen County, the most heavily affected cotton plant disease rate was 20-58%, about 10% reduction; Jingshan County Wing Lung serious cotton fields, the diseased plant rate of 29-64.5%, about 4% reduction in production; Cotton fields, disease strains