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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (9): 362-367.

所属专题： 油料作物

• 植物保护 农药 • 上一篇    下一篇

向日葵不同播期对葵螟避害效果研究

白全江   

  • 收稿日期:2010-09-05 修回日期:2010-12-19 出版日期:2011-04-25 发布日期:2011-04-25
  • 基金资助:

    国家向日葵现代产业技术体系

Effect of Sowing Date on Damage Avoidance in Homoeosoma nebulellum Hübner

  • Received:2010-09-05 Revised:2010-12-19 Online:2011-04-25 Published:2011-04-25

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874

摘要：

摘要：在巴彦淖尔市3个旗县区利用当地主栽向日葵品种-美葵LD5009，从5月1日至6月14日每隔5天播种1次，共进行了10个播期对向日葵螟避害效果的试验，结果表明，在巴彦淖尔市从东到西各试验区向日葵受害程度依次严重，而且5月20日至5月30日期间播种的向日葵，葵盘和籽粒平均受害率较轻，分别为6.47%~23.30%、0.17%~0.47%，以5月25日受害最轻。5月20日前播种，表现出播期越早受害越重的趋势，5月30日以后，随播种期的推迟受害再次逐渐加重，但晚播籽粒受害率较轻。在巴彦淖尔市防治向日葵螟采用当地主栽品种-美葵LD5009避葵螟为害的最佳播种期为5月20日~6月5日。

关键词: 铬, 铬, 热应激, 生产性能, 屠宰性能

Abstract:

Abstract: A sunflower cultivars, LD5009, was planted in ten different sowing dates (in five days interval from 1st May to 14th June) in three locations in Bayan nur to analysis the effect of sowing date on damage avoidance in Homoeosoma nebulellum Hübner. Results showed that the most damage of H.nebulellum occurred in Linhe district in west of Bayan nur. When sunflower sown from 20th May to 30th May, lower sunflower seed damage rate varied from 0.17% to 0.47%, and lower sunflower disc damage rate varied from 6.47% to 23.30%. The earlier the crop was sown, the more severely damage was reached, and the least damage was sown on 25th May. With delay of sowing date after 30th May, sunflower disc damage rate increased, but sunflower seed damage rate was lower.