水稻基部叶鞘封泥对水稻纹枯病的影响  

Effect of Covering the Bottom of Rice Leaf Sheath with Mud on the Rice Sheath Blight

作　　者：张亚[1] 廖晓兰[1] 曾晓楠[2] 黄璜[3] 薛正杰[1] 沈建凯[3] 

机构地区：[1]湖南农业大学生物安全科学技术学院,长沙410128 [2]湖南生物机电职业技术学院 [3]湖南农业大学农学院

出　　处：《中国生物防治》2010年第1期102-105,共4页Chinese Journal of Biological Control

基　　金：国家863资助项目(863-306-ZD05-3-E);国家自然科学基金资助项目(39670142);湖南省科技厅资助项目(OONKY1001)

摘　　要：采用先封泥于水稻基部叶鞘再人工接种水稻纹枯病菌,调查水稻纹枯病发生情况,同时测定水稻叶鞘过氧化物酶活性和可溶性糖含量变化。连续3年试验的调查结果表明：先封泥于水稻基部叶鞘再人工接种水稻纹枯病菌的发病率、病情指数明显低于井冈霉素处理和对照,其控病效果为72.80%~81.21%。先封泥再接病菌处理的过氧化物酶活性比对照高,但低于井冈霉素处理;先封泥再接病菌使可溶性糖含量降低,但不同处理之间差异不显著。Through experimental treatment of covering the bottom of rice leaf sheath with mud before inoculation that imitated the duck activity,the present study was carried out to survey the occurrence of rice sheath blight and to detect the peroxidase activity as well as the content of the soluble sugar.The results of the three years＇ experiments showed that the rate of disease occurence and disease index after experimental treatment were lower than that after Jinggangmycin treatments and CK,with the control effect up to 72.80%-81.21%.The peroxidase activity after experimental treatment was higher than that after CK,while it was lower than that after Jinggangmycin treatment.The content of the soluble sugar reduced slightly,but there is no significant difference among the different treatments.

关 键 词：封泥 水稻纹枯病 影响 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治] S474[农业科学—植物保护]