亳州谯城区玉米粗缩病发生及流行规律

为了分析亳州市谯城区玉米粗缩病发生规律，通过系统调查，分析了亳州谯城区玉米品种、作物播期、栽培模式、气象规律等因素对玉米粗缩病发生及流行规律的影响。结果表明，亳州地区粗缩病发生及流行主要原因为高温干旱与播期的交互影响。‘鲁单981’的抗病性最弱，发病率高达4.1%；‘金赛6850’的抗病性最强，发病率仅有0.9%。2007年持续高温干旱，粗缩病发生最重，5月发病率为21.2%，6月发病率为0.12%。

Occurrence and Popularity Regularity of Maize Rough Dwarf Virus Disease in Qiaocheng of Bozhou

To analyze occurrence regularity of maize rough dwarf disease in Qiaocheng of Bozhou, we investigated systematically maize varieties, timing of sowing, cultivation patterns and meteorology regularity to analyze the impact of MRDV occurrence and popularity. The results showed that, the interaction impact of high temperature and drought and timing of sowing was main reason of MRDV occurrence and popularity. There was the lowest disease resistance of ‘Ludan981’, which the percentage of the disease incidence rate was 4.1%. The variety of ‘Jinsai6850’ had the highest disease resistance and disease incidence rate had only 0.9%. Because of high temperature and draught, there was the highest incidence rate of maize rough dwarf disease between in May and in June, the disease incidence rate was 21.2% in May, and 0.12% in June.