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水稻立枯病在世界许多产稻国都有记载,我国南北稻区都有发生。特别是近几年随着水稻早育稀植栽培技术在“三北”(华北、东北、西北)地区的推广,旱育秧阶段立枯病日趋严重,已成为北方稻区当前水稻生产上的主要病害之一。立枯病和其它病害一样,是寄主、病原菌和环境条件三者之间相互作用,相互影响的结果。不良的环境条件使寄主水稻的抗病力下降,从而诱发病原菌的浸染,导致发病。在三
Rice blight in many rice producing countries in the world are documented, our country has occurred in both northern and southern rice. Especially in recent years, with the popularization of cultivation techniques of early maturing and fertile rice cultivation in the “Three Norths” (North China, Northeast China and Northwest China), the growing season of dry blight has become more and more serious and the disease has become the main disease in the current rice production in northern China. one. Like other diseases, the blight is the result of interaction and interaction between hosts, pathogens and environmental conditions. Poor environmental conditions make host resistance to rice decreased, thus inducing the dissemination of pathogens, leading to the disease. In three