水稻抽穗扬花期多雨高湿 谨防黑粉病发生

• 作 者: 古崇
• 出 处: 山东农药信息
• 发表日期: 2008年06期
• 关键词: 抽穗扬花期 黑粒 检疫对象 颖壳 杂交稻种 柱头外露率 稻株 浸种消毒 粒色 花时

水稻粒黑粉病又称粒黑穗病,俗称黑粒谷、乌米谷等,为真菌病害,系对外检疫对象。过去各主要稻区多为零星发生,自大力推广杂交稻以来,各地发病均较普遍,严重影响杂交水稻特别是制种田的产量和质量。下面介绍这一病害的主要症状、发病特点和防治方法,供参考。

Rice grain powdery mildew, also known as grain smut, commonly known as black grain valley, Umi Valley, etc., for the fungal diseases, foreign quarantine objects. In the past, major rice-producing areas were sporadic and sporadic occurrences. Since the vigorous promotion of hybrid rice, incidence in various places has become more common, seriously affecting the yield and quality of hybrid rice, especially for farming. The following describes the main symptoms of this disease, disease characteristics and prevention methods for reference.