论文部分内容阅读
水稻恶苗病是由串珠镰刀菌侵染所致的一种系统性病害,带菌种子和稻草是水稻恶苗病的初次侵染源。2000~2012年,水稻恶苗病在本地零星发生,田间发病率不到1%,且多在苗期显症。2013~2015年,水稻恶苗病在本地的发生面积骤增,发生特点、为害特性和发生程度也与10多年前具有明显差异。一、发生特点1.发生程度重、范围广、重大面积大:2014~2015年水稻恶苗病发生程度
Fusarium oxysporum is a systemic disease caused by Fusarium moniliforme infection. Fungus seeds and straw are the primary infection sources of Fusarium oxysporum in rice. From 2000 to 2012, the rice Bakanae disease occurred sporadically in the locality, the incidence in the field was less than 1%, and most of the disease occurred in the seedling stage. From 2013 to 2015, the area of rice saprophytic disease increased sharply in area, its occurrence characteristics, pest characteristics and degree of occurrence were also significantly different from 10 years ago. First, the occurrence of characteristics 1. Occurrence of a heavy degree, a wide range of major areas: 2014 ~ 2015 degree of occurrence of Bakanaemia