论文部分内容阅读
今年晚稻稻瘟病在我市发生了罕见的大流行,发生面积广,危害重为历史罕见。全市晚粳面积1.122万hm~2,全部发病,实际损失达12000t。 1 发生特点 1.1 见病早,传播快 今年7月20日在陈河镇谷扬村晚稻秧田见病。发病品种为“3037”。8月14日稻瘟病仅在我市陈河谷扬村、黄滩太阳冲等老病区发病,病田率为54％,到8月28日全市普遍发病,病田率为100％,时间间隔仅14天。 1.2 来势猛,上升快 8月3日在陈河谷扬村调查谷树发的一块田,品种为“3037”,当时叶稻瘟病株率
This year’s rice blast occurred in our city a rare pandemic occurred in a wide area, endangering the history of rare. The city’s late japonica area of 112200 hm ~ 2, all the disease, the actual loss of 12000t. 1 Occurrences 1.1 See the disease early, spread fast July 20 this year, Chen Yang Zhen Gu Yang Yang late rice seedling disease. The incidence of species is “3037”. On August 14, the blast occurred only in the old ward of Chenhegu Village and Huangtan Sun Chong in our city. The incidence rate of the disease was 54%. By August 28, the general incidence in the city was 100%, with the interval of only 100%. 14 days. 1.2 fierce Meng, rising fast Aug. 3 in Chenhe Gu Yang Village survey Gu Shushan a field, breed as “3037”, when the leaf blast blast strain rate