滨海稻区水稻纹枯病发生动态及防治技术  

Dynamic Analysis and Preventive of Rice Sheath Blight in Coastal Rice Area

作　　者：王井士[1] 车喜庆 马晓慧[1] 邢亚楠[1] 桑海旭[1] 于深州[1] WANG jing-shi;CHE Xi-qing;MA Xiao-hui;XING Ya-nan;SANG hai-xu;YU Shen-zhou(Liaoning Saline-Alkali Land Utilization Research Institute,Panjin Liaoning 124010,China)

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010

出　　处：《北方水稻》2020年第6期30-32,共3页North Rice

基　　金：国家重点研发计划项目(2018YFD0200200);辽宁省自然基金指导计划项目(2019-ZD-0398)。

摘　　要：为探究水稻纹枯病的发生规律和防治方法。通过田间小区试验,对不同品种和不同年份水稻纹枯病病害流行时间的动态观测,绘制了水稻纹枯病病害季节流行曲线。结果表明:种植品种对水稻纹枯病的发生严重程度有影响;年份对水稻纹枯病的始发期和严重程度均有影响。水稻纹枯病的病害始发期为7月中旬,7月下旬到8月上旬为病情指数快速增长期,9月上中旬病情趋于平稳。药剂防治结果表明:650 g·667m^-2噻呋酰胺对水稻纹枯病的防治效果最好,达到了76.1%,40 ml·667 m^-2井岗·蜡芽菌的防效次之,为61.0%。由此可见,7月上旬是防治水稻纹枯病的关键期。田间使用650 g·667 m^-2噻呋酰胺能够有效防治水稻纹枯病。In order to investigate the occurred and control of rice sheath blight,the seasonal epidemic curve of rice sheath blight disease was drawn based on the time dynamic observation of different varieties and different years in the field.The results showed thatthat different plant varieties could affect the severity of rice sheath blight,and different years could affect the onset and severity of rice sheath blight.The onset of rice sheath blight disease in the transplanted field was mid-July,and the period from late July to early August was a period of rapid growth.The disease leveled off in early-middle September.The direct seeded field was lighter and later than the transplanted field of rice sheath blight.thiafuramide of 650 g·667 m^-2 has the best control effect on rice sheath blight,reached 76.1%.Followed by Jinggang·Bacillus cereus of 40 ml·667 m^-2 was 61.0%.Early July was the critical period for control rice sheath blight.Field used of 650 g·667 m^-2 of thiafuramide was effective in control rice sheath blight.

关 键 词：滨海稻区 纹枯病 发生动态 防治 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]