20%寡聚酸碘对水稻稻瘟病的田间防治效果研究  

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

作　　者：梁亮[1] 胡雪芳[1] 刘卫萍[1] 张志民[1] 王士奎[1] 

机构地区：[1]农业部规划设计研究院,北京100025

出　　处：《中国农学通报》2013年第36期351-354,共4页Chinese Agricultural Science Bulletin

基　　金：2012年度农业部规划设计研究院自选课题"寡聚酸碘的制备及其效果研究"

摘　　要：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,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。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。The aim of this study was to evaluate the control effect of 20% iodine oligosaccharide acids against rice blast （Magnaportbe oryzae）, to develop novel agents for control of rice blast. This study was tested by field trials, with 75% tricyclazole WP and 40% isoprothiolane EC as the control medicament. 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 grew better than sprayed the control medicament and water. 20% iodine oligosaccharide acids had good control effect on rice blast and had the potential to develop agents for control rice blast.

关 键 词：稻瘟病 20%寡聚酸碘 田间防效 

分 类 号：S482.2[农业科学—农药学]