| 第 53 卷第 3 期 |  | Vol. 53 No. 3 | | 2023 年 6 月 | Jun 2023 |
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所屬欄目：農藥及中間體
40%砜吡草唑懸浮劑防治大豆田一年生雜草效果與安全性 |
| 吳明峰1，2，3，黃至暢1，2，3，孔玄慶1，2，3，龍楚云1，2，3，成淑芬1，2，3，余倩莎1，2，3，李建明1，2，3，陳力華1，2，3*，歐曉明1，2，3*
（1. 湖南化工研究院有限公司 國家農藥創(chuàng )制工程技術(shù)研究中心，湖南 長(cháng)沙 410014；2. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室，湖南 長(cháng)沙 410014；3. 湖南化研院檢測技術(shù)有限公司，湖南 長(cháng)沙 410014） |
| 摘 要：為明確40%砜吡草唑懸浮劑土壤噴霧處理對大豆田一年生雜草的防效及對大豆的安全性，2021年采用隨機區組設計進(jìn)行田間藥效試驗。結果表明：40%砜吡草唑懸浮劑在150、180、210、360 g a.i./hm2劑量下對大豆田主要雜草馬唐、狗尾草、藜、反枝莧、稗草、青葙、苘麻、馬齒莧等均有較好防治效果。藥后40 d總草株防效88.14%~97.58%，總草鮮重防效86.44%~97.73%，增產(chǎn)率3.52%~12.68%，且對供試大豆品種安全。40%砜吡草唑懸浮劑可作為大豆田備選除草劑，采用土壤噴霧法防治大豆田一年生雜草，推薦使用劑量150~180 g a.i./hm2。 |
| 關(guān)鍵詞：40%砜吡草唑懸浮劑；大豆；雜草；防效；安全性 |
| 中圖分類(lèi)號：S482.4 文獻標識碼：A 文章編號：1009-9212（2023）03-0016-04 |
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| Control Efficacy of Pyroxasulfone 40% SC Against Annual Weeds and Its Safety in Soybean Fields |
| WU Ming-feng1,2,3, HUANG Zhi-chang1,2,3, KONG Xuan-qing1,2,3, LONG Chu-yun1,2,3, CHENG Shu-fen1,2,3, YU Qian-sha1,2,3, LI Jian-ming1,2,3, CHEN Li-hua1,2,3*, OU Xiao-ming1,2,3*
(1. National Engineering Research Center for Agrochemicals, Hunan Research Institute of Chemical Industry Co., Ltd., Changsha 410014, China; 2. Agrochemical Key Laboratory of Hunan Province, Changsha 410014, China; 3. Hunan Research Institute of Chemical Industry Testing Technology Co., Ltd., Changsha 410014, China) |
| Abstract：The study was conducted to determine the control efficacy of Pyroxasulfone 40% SC against annual weeds in soybean fields and its safety on soybean by soil spray treatment, a randomized block design was used to conduct field efficacy trials in 2021. The results showed that Pyroxasulfone 40% SC had excellent control efficacy on the main weeds in soybean fields, such as Digitaria sanguinalis, Setaria viridis, Chenopodium album, Amaranthus retroflexus, Echinochloa crusgalli, Celosia argentea, Abutilon theophrasti and Portulaca oleracea at the effective ingredient dosage of 150, 180, 210 and 360 g a.i./hm2. At 40 days of treatment, the average weed plant control effects of different doses were 88.14%~97.58%, the average fresh weight control effects were 86.44%~97.73%. The yield increase rate of soybean was 3.52%~12.68%, and it was safe for the tested soybean varieties. Therefore, Pyroxasulfone 40% SC could be used as an alternative herbicide to control annual weeds in soybean fields by soil spray, and the recommended dosage was 150~180 g a.i./hm2. |
| Key words：Pyroxasulfone 40% SC; soybean; weed; control efficacy; safety |
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基金項目：湖南省企業(yè)科技創(chuàng )新創(chuàng )業(yè)團隊項目（湖南海利新材料科技創(chuàng )新創(chuàng )業(yè)團隊）。
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作者簡(jiǎn)介：吳明峰（1989—），男，湖南懷化人，助理研究員，碩士，研究方向：農藥生物活性（E-mail：348263928@qq.com）。
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聯(lián) 系 人：陳力華，高級工程師，碩士，研究方向：農藥殘留、化學(xué)品安全評估（E-mail：956735378@qq.com）；歐曉明，研究員，博士，研究方向：農藥殘留化學(xué)、環(huán)境毒理學(xué)（E-mail：xmouhn@163.com）。
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收稿日期：2023-05-05
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