在水稻孕穗至抽穗期,连续低温、多雨、日照少,有利于发病。长期灌水过深,田水落干过迟病害 发生严重。施氮肥过量,尤其在穗期追施氮肥过多的田块发病加重。
Rice booting and heading stages meeting with periodic low temperatures, rain, and little sunshine are conducive to the disease. The severity of the disease is most likely to occur in long-term and too-deep irrigation and too late dried bed soil in the field water. Excessive application of nitrogen fertilizer, especially in fields with excessive application of topdressing of nitrogen fertilizer at the heading stage aggravates the disease.
水稻病虫害绿色防控 Green Prevention and Control of Rice Diseases and Pests
三 稻曲病绿色防控 Green Prevention and Control of Rice False Smut
(四)防治措施 Control Measures
(1)选育和种植抗病品种:选用抗病品种是防治稻曲病最经济有效的方法。如在重庆 市区域内的主栽品种中,准两优527、K优88、金优725、岗优615、D优162、汕优149 等品种病穗率、病粒率都较低,说明这些品种具有一定的抗病能力。