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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (36): 351-354.doi: 10.11924/j.issn.1000-6850.2013-0204

所属专题： 水稻

• 植物保护 农药 • 上一篇    下一篇

20%寡聚酸碘对水稻稻瘟病的田间防治效果研究

梁亮 刘卫萍 胡雪芳 张志民 王士奎   

  • 收稿日期:2013-01-21 修回日期:2013-03-05 出版日期:2013-12-25 发布日期:2013-12-25
  • 基金资助:
    农业部规划设计研究院自选课题

Control Effect of 20% Iodine Oligosaccharide Acids on Rice Blast（Magnaporthe oryzae）

  • Received:2013-01-21 Revised:2013-03-05 Online:2013-12-25 Published:2013-12-25

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摘要： [目的]为了明确20%寡聚酸碘防治水稻稻瘟病的田间防治效果，开发防治水稻稻瘟病的新型药剂，[方法]采用大田药效实验的方法，以40%稻瘟灵EC和75%三环唑WP为对照药剂，对20%寡聚酸碘防治水稻稻瘟病的大田效果进行了研究。[结果]结果表明：各处理对稻瘟病的防治效果为75%三环唑WP 2500倍稀释液＞20%寡聚酸碘1000倍稀释液＞20%寡聚酸碘1500倍稀释液＞40%稻瘟灵EC 1000倍稀释液＞20%寡聚酸碘2000倍稀释液＞20%寡聚酸碘3000倍稀释液，防效分别为97.32%、95.48%、93.51%、91.21%、87.32%、和79.57%。P=0.05水平上，20%寡聚酸碘1000倍稀释液与对照药75%三环唑WP 2500倍稀释液对水稻稻瘟病的防效相当，20%寡聚酸碘1500倍稀释液与对照药40%稻瘟灵EC 1000倍稀释液对水稻稻瘟病的防效相当，并且喷施20%寡聚酸碘稀释液与喷施对照药和清水的小区相比，水稻长势更加旺盛。[结论]20%寡聚酸碘对水稻稻瘟病具有良好的防治效果，具有开发为水稻稻瘟病防治药剂的潜力。

关键词: 嘌呤代谢, 嘌呤代谢

Abstract: [Objective] The aim of this study was to evaluate the control effect of 20% iodine oligosaccharide acids on rice blast (Magnaporthe oryzae), to develop novel agents for control of rice blast. [Method] This study was tested by field trials, with 75% tricyclazole WP and 40% isoprothiolane EC as the control medicament. [Result] The results of the field control effect showed that 75% tricyclazole WP diluted 2500 times > 20% iodine oligosaccharide acids diluted 1000 times > 20% iodine oligosaccharide acids diluted 1500 times > 40% Isoprothiolane EC diluted 1000 times > 20% iodine oligosaccharide acids diluted 2000 times > 20% iodine oligosaccharide acids diluted 3000 times, which field control effect was 97.32%, 95.48%, 93.51%, 87.32% and 79.57%, respectively. The control effect of 20% iodine oligosaccharide diluted 1000 times was equal to 75% tricyclazole WP diluted 2500 times and 20% iodine oligosaccharide diluted 1500 times was equal to 40% isoprothiolane EC diluted 1000 times at P=0.05. Moreover, the rice which sprayed 20% iodine oligosaccharide acids growed better than sprayed the control medicament and water. [Conclusion] 20% iodine oligosaccharide acids has good control effect on rice blast and had the potential to develop agents for control rice blast.

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