论文部分内容阅读
水稻纹枯病主要发生在温带和热带产稻国家,在我国南北稻区皆有分布。近些年,随着施氮量和栽培密度的增加,病害发生普遍,日益严重。
Rice sheath blight occurs mainly in temperate and tropical rice producing countries, and is distributed in both northern and southern rice regions of our country. In recent years, with the increase of nitrogen application rate and planting density, disease occurrence is widespread and worsening.