早稻不同栽培方式下纹枯病的发生规律  

Occurrence Regularity of Sheath Blight of Early Rice in Different Planting Patterns

作　　者：王超[1] 周宇杰[1] 陈月娣 徐越坚 石星华[1] 卢春燕[1] 

机构地区：[1]浙江省诸暨市农技推广中心,浙江诸暨311800

出　　处：《中国稻米》2015年第3期88-89,共2页China Rice

摘　　要：对早稻不同栽培方式下纹枯病的发生规律进行了研究。结果表明,手插、机插和直播在同一时期播种,纹枯病初见最早的是手插,比机插和直播早5 d左右;纹枯病急增期以直播栽培方式来得最早,比手插和机插早10~20 d;纹枯病病情指数以直播〉手插〉机插,直播在初见后的15~20 d,纹枯病病情显著重于手插和机插,手插与机插的病情差异不显著。因此,对直播早稻需更加重视并提早防治纹枯病。The initial stage, shock stage and occurrence degree of early rice sheath blight with hand transplanting, machine transplant- ing and direct seeding were studied. The results showed that the initial stage of sheath blight with hand transplanting was earlier 5 days than the other two planting patterns in the same sowing date; the shock stage of sheath blight with direct seeding was earlier 10~ 20 days than the other two planting patterns. The disease index of sheath blight performance： direct seeding 〉 hand transplanting 〉 machine transplanting, the disease index of direct seeding was significant heavier than that of the other two planting patterns at 15~20 d after the initial stage of sheath blight, the disease index of hand transplanting and machine transplanting had no significant differ- ence. Therefore, we should pay more attention to the control of sheath blight and practice early in direct seeding early rice.

关 键 词：早稻 栽培方式 纹枯病 发生规律 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]