中国稻米

中国稻米

• 品种与技术 • 上一篇    下一篇

不同生物农药对杂交中稻齐穗期螟虫的防治效果及产量的影响

  1. 1 四川省农业科学院水稻高粱研究所/农业部西南水稻生物学与遗传育种重点实验室，四川 德阳 618000；2 四川省作物生理生态及栽培重点实验室，四川 温江 611130
  • 出版日期:2019-11-20 发布日期:2019-11-20
  • 通讯作者: 徐富贤
  • 基金资助:

    国家重点研发计划（2017YFD0301705）；国家水稻产业技术体系（CARS-01-25）

Control Effects of Different Bio-pesticides on the Chilo suppressalis at Full Heading Stage and Yield of Middle Hybrid Rice

  • Online:2019-11-20 Published:2019-11-20

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摘要：

2018年在四川省德阳市进行大田试验，比较了5种生物农药对杂交中稻齐穗期螟虫的防治效果和产量的影响。结果表明，绿僵菌对杂交中稻齐穗期螟虫的防治效果最好，其白穗率最低，较化学农药康宽降低了27.5%；白僵菌、苏云金杆菌、苦参碱、藜芦碱处理齐穗期的白穗率均高于康宽处理，但差异不显著。与康宽处理相比，绿僵菌处理的杂交中稻产量增加了3.0%，增产不显著；白僵菌、苏云金杆菌、藜芦碱处理的杂交中稻产量与康宽处理相当。综合产量和白穗率来考虑，用绿僵菌对杂交中稻齐穗期螟虫（二代螟虫）进行防治较为适宜。

关键词: 生物农药, 杂交中稻, 防治效果, 产量

Abstract:

A field experiment was conducted to study the control effects of five bio-pesticides on Chilo suppressalis and grain yield of mid-season hybrid rice in Deyang city of Sichuan province in 2018. The results showed that, the control effects of Metarhizium anisopliae against Chilo suppressalis at full heading stage were the best among the five bio-pesticides. The white panicle rate of Metarhizium anisopliae treatment was the lowest, which was 27.2% lower than chemical pesticide treatment（Coragen）. There was no significant difference in white panicle rate between the other four bio-pesticides and chemical pesticide. Compared with the chemical pesticide treatment, the yield of Metarhizium anisopliae treatment was increased by 3.0%. The yields of Beauveria bassiana treatment, Bacillus thuringiensis treatment and Veratridine treatment were similar to chemical pesticide treatment. Considering the yield and white panicle rate of middle hybrid rice, Metarhizium anisopliae had the best control effect on the second generation of rice borer at the full panicle stage of hybrid rice.

Key words: bio-pesticide, middle season hybrid rice, control effect, grain yield

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