40%嘧霉胺SC对香葱灰霉病的田间防效
Modern Agrochemicals(2022)
Abstract
为明确40%嘧霉胺SC不同剂量对香葱灰霉病的病指防效和安全性,本研究于2020年开展了40%嘧霉胺SC对香葱灰霉病的田间药效试验研究.结果表明,40%嘧霉胺SC 1124.44~1499.25 mL/hm2对香葱安全,且随着剂量的增加防效也增加.在香葱灰霉病发病初期2次施药,药后14 d 40%嘧霉胺SC 1124.44、1311.84和1499.25 mL/hm23种剂量下,对香葱灰霉病病指防效分别为64.87%、80.11%、89.01%;其1499.25 mL/hm2的病指防效高于对照组药剂啶酰菌胺.因此,40%嘧霉胺SC可在大面积生产中推广应用,推荐用量为1311.84~1499.25 mL/hm2.
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