通过笔者多年对安庆市水稻紫鞘病发生的研究,查清了病原,观察分析摸清了发生规律,测定了病株田间分布型和田间调查理论抽样数,进行了病株损失率测定和探讨研究出适当可行的分级标准,为本病的深入研究及调查测报办法的制定提供了依据。 Through the author’s research on the occurrence of rice sheathworm in Anqing City for many years, the pathogen was identified, the law of occurrence was found by observation and analysis, the distribution pattern of the field and the theoretical sampling number of field investigation were determined, and the loss rate of the diseased plant was measured and discussed The study of the appropriate and feasible grading standards provided the basis for the further study of this disease and the formulation of investigation and reporting methods.