中国稻米

中国稻米 ›› 2015, Vol. 21 ›› Issue (3): 88-89.DOI: 10.3969/j.issn.1006-8082.2015.03.026

• 品种与技术 • 上一篇    下一篇

早稻不同栽培方式下纹枯病的发生规律

  1. 浙江省诸暨市农技推广中心，浙江 诸暨  311800
  • 出版日期:2015-05-20 发布日期:2015-05-20

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

  • Online:2015-05-20 Published:2015-05-20

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被引次数

1

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。

关键词: 早稻, 栽培方式, 纹枯病, 发生规律

Abstract: The initial stage, shock stage and occurrence degree of early rice sheath blight with hand transplanting, machine transplanting 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 difference. Therefore, we should pay more attention to the control of sheath blight and practice early in direct seeding early rice.

Key words: rice, planting pattern, sheath blight, occurrence regularity

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