氟二氧杂环己烯、甲霜灵-M和嘧菌酯混合溶液拌种防治稻瘟病

Chen Deng, Hu Qi-juan, Cheng Xiao-feng
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引用次数: 0

摘要

水稻恶病是由镰刀菌引起的一种典型的种子传播疾病,发生在苗床和田间。杀菌剂种子处理是解决这种疾病的有效方法。在本研究中,我们使用了一种由1.1%的氟二恶腈、3.3%的甲霜灵-M和6.6%的嘧菌酯组成的三元杀菌剂悬浮液11%FMA来覆盖水稻种子,以预防巴卡那病。11%FMA对水稻种子处理具有抗涝性。结果表明,11%的FMA对藤仓镰刀菌菌丝生长有明显的抑制作用。以每公斤种子1、2和4克的速率用FMA进行种子追肥促进了种子发芽和幼苗根系的生长。在所有剂量率下,用11%的FMA处理可预防水稻幼苗的卡那病90%以上,尤其是在每公斤种子4、6和8克时可预防95%以上。在随后的成熟期,在每公斤种子6或8克的情况下,稻瘟病的控制效率也达到95%以上,略高于每公斤种子1或2克的约92%。最重要的是,1 g/kg处理的水稻产量显著提高了11%,2、4或8 g/kg处理的产量提高了约8%,6 g/kg处理的稻米产量提高了5%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Control of rice bakanae disease by seed dressing with mixed solution of fludioxonil, metalaxyl-M and azoxystrobin
Rice bakanae disease is a typical seed-borne disease caused by Fusarium fujikuroi that occurs in seedling beds and in fields. Fungicide seed treatment is an effective solution to this disease. In this study, we used a triple-fungicide suspension identified as 11% FMA, which is composed of 1.1% fludioxonil, 3.3% metalaxyl-M and 6.6% azoxystrobin to coat rice seeds for the prevention of bakanae disease. 11% FMA is water-logging resistant for rice seed treatment. Results showed that the mycelial growth of F. fujikuroi was significantly inhibited by 11% FMA in the laboratory test. Seed dressing with FMA at the rate of 1, 2, and 4 g per kg of seeds promoted seed germination and growth of seedling roots. Treatment with 11% FMA under all dose rates prevented rice bakanae disease of seedlings by more than 90%, especially by more than 95% at 4, 6 and 8 g per kg of seeds. During the subsequent maturation period, rice bakanae control efficiency reaches above 95% as well at 6 or 8 g per kg of seeds, slightly larger than about 92% at 1 or 2 g per kg of seeds. Above all, the rice yield notably improved by 11% with 1 g/kg, by around 8% with 2, 4, or 8 g/kg and by 5% with 6 g/kg treatment.
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