10种除草剂对水稻纹枯病菌的影响  

INFLUENCE OF SOME HERBICIDES ON RHIZOCTONIA SOLANI

作　　者：朱华[1] 黄奔立[1] 倪桂花[1] 吴进才[1] 袁树忠[1] 

机构地区：[1]扬州大学农学院植物保护系,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2002年第2期71-73,78,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家自然科学基金资助项目(39770128)

摘　　要：在实验室条件下,就10种稻田除草剂对水稻纹枯病菌的影响进行研究。结果表明:在PSA培养基上,乙氧氟草醚、丁草胺、乙草胺、恶庚草烷和恶草灵能显著抑制水稻纹枯病菌菌丝的生长,其IC50分别为2.01、4.16、8.12、11.97和22.01mg·L-1;而灭草松、苄嘧磺隆、环胺磺隆对菌丝生长抑制作用不明显。在100mg·L-1浓度下,乙氧氟草醚、乙草胺、恶庚草烷、恶草灵、丁草胺对水稻纹枯病菌菌核的萌发有一定的抑制作用。盆栽试验结果表明:二氯喹啉酸、乙氧氟草醚、恶草灵、丁草胺和恶庚草烷对水稻纹枯病的发生有抑制作用;而灭草松、苄嘧磺隆、乙草胺则有加重病害发生的趋势。The results obtained in this study showed that the mycelial growth of Rhizoctonia so1ani was remarkably inhibited by oxyfluorfen, butachlor, acetochlor, cinmethylin and oxadiazone on the medium PSA. Their IC50 were 2.01, 4.16, 8.12, 11.97 and 2201mg·L-1 respectively. The selerotia germination was obviously affected by oxyfluorfen, acetochlor, cinmethylin and oxadiazone at 100mg·L-1. Quinclorac, oxyfluorfon, oxadiazone, butachlor and cinmethylin effetively inhibited the occurrence and development of rice sheath blight in pot trial.

关 键 词：纹枯病 水稻 纹枯病菌 除草剂 影响 抑制作用 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]