截止到6月21日,重庆市大春主要作物病虫害发生面积1220.6万亩次,较上年同期减7.3%。马铃薯晚疫病发生面积177.6万亩,较上年同期减4.8%,平均病株率44.91%,较上年同期增13.53个百分点,酉阳、黔江、彭水、武隆、奉节、巫山、云阳局部田块最高病株率达100%。水稻二化螟发生面积582.7万亩次,较上年同期减2.2%,平均枯鞘率3.65%,较上年同期增0.48个百分点,云阳局部田块最高枯鞘率达56.3%;平均枯心率0.64%,较上 As of June 21, the area of ​​major pests and diseases occurring in spring in Chongqing was 12,206 mu, down 7.3% from the same period of last year. Late blight incidence area of ​​potato was 177.6 million mu, decreased by 4.8% over the same period of last year with an average of 44.91% of diseased plants, representing a year-on-year increase of 13.53 percentage points. Youyang, Qianjiang, Pengshui, Wulong, Fengjie, Wushan, Yunyang The highest rate of local plots of plants reached 100%. The occurrence area of ​​rice stem borer was 5,827,000 mu, 2.2% lower than that of the same period of last year, with an average rate of 3.65% for the unharpened skin, 0.48% higher than the same period of last year, and the highest rate of 56.3% 0.64% heart rate, more on