山东省主要植棉地区棉花铃病发生及品种抗性分析

Occurrence of Cotton Boll Rot in Main Cotton Producing Areas of Shandong and Analysis of Variety Resistance

2015—2017年对山东省主要植棉地区棉花铃病的发生情况进行调查,同时对山东省棉花新品种区域试验供试品种的铃病抗性进行了评价。结果表明:(1)棉铃疫病、红腐病、红粉病、炭疽病、黑果病、曲霉病和软腐病在各地均有发生,其中疫病、红腐病和红粉病的发病比例最高,不同地区间棉花铃病的发生无显著差异,但相同调查点不同年份发病程度变化较大。(2)对烂铃的抗性,品种间存在显著差异。

During2015-2017,a survey on occurrence of cotton boll rot in main cotton planting areas in Shandong Province was launched.The resistance of cotton varieties in the provincial regional tests against this disease was evaluated by field experiments.The results showed the main disease types of cotton boll rot were cotton boll blight,red rot,pink rot,anthrax,black fruit,aspergillosis and soft rot,of which,the incidence of cotton boll blight,red rot and pink rot was the highest.There was no significant difference in the occurrence of cotton boll rot among different regions in Shandong Province,but the incidence of cotton boll disease varied greatly in different years at the same survey site.There were significant differences among varieties in the resistance to cotton boll rot.