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開展時間: 2025-02-25
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【實用技術(shù)】大豆“一噴多促”技術(shù)意見
2024-08-27
09:27:48
來源:內(nèi)蒙古自治區(qū)農(nóng)牧廳 閱讀量:12122
評論
導(dǎo)讀:大豆上應(yīng)重點關(guān)注漬澇、低溫冷害、早霜、病蟲害等災(zāi)害威脅,因地因苗、因時因災(zāi),分類開展“一噴多促”。
【農(nóng)機網(wǎng) 科技創(chuàng)新】 目前我區(qū)大豆正處于結(jié)莢鼓粒期,是產(chǎn)量品質(zhì)形成的關(guān)鍵期,也是“一噴多促”的窗口期。將葉面肥、調(diào)節(jié)劑、抗逆劑、殺蟲殺菌劑等混合噴施,一次作業(yè)可實現(xiàn)促生長發(fā)育、促灌漿成熟、促災(zāi)后恢復(fù)、促產(chǎn)量提高等多重效應(yīng),是大豆中后期有災(zāi)防災(zāi)、無災(zāi)增產(chǎn)的關(guān)鍵措施。大豆上應(yīng)重點關(guān)注漬澇、低溫冷害、早霜、病蟲害等災(zāi)害威脅,因地因苗、因時因災(zāi),分類開展“一噴多促”。
一、藥肥選擇
當(dāng)前“一噴多促”以保莢、增粒重、促早熟為重點,選擇葉面噴施磷酸二氫鉀、中微量元素水溶肥。根據(jù)病蟲發(fā)生情況可混合施用殺菌劑或
殺蟲劑,大豆殺菌劑可選用吡唑醚菌酯、嘧菌酯、吡唑醚菌酯·氟環(huán)唑、苯甲·丙環(huán)唑等;殺蟲劑可選擇氯蟲苯甲酰胺、溴氰菊酯、高效氯氟氰菊酯、甲維·毒死蜱等。受災(zāi)地塊可混合噴施生長調(diào)節(jié)劑,可選擇三十烷醇、蕓苔素內(nèi)酯、吲哚丁酸等。
二、科學(xué)噴施
1.時間上,作業(yè)時風(fēng)力應(yīng)在三級以內(nèi)、溫度不超過30℃,一般選擇在無雨天的上午9時前、下午4時后進行,避開正午高溫時段;如噴后24小時內(nèi)遇中到大雨,要及時補噴;可因地制宜選擇無人機夜間作業(yè)。
2.用量上,采用無人機作業(yè)時,每畝噴液量1.5升以上,并在藥液中添加適量的噴霧助劑,提高霧滴沉降、抗飄移、抗蒸發(fā)等性能。
3.作業(yè)上,植保無人機飛行速度控制在3—5米/秒,飛行高度根據(jù)無人機載重量進行調(diào)整,載重30升以下無人機飛行高度距大豆冠層2—3米,載重30升以上的為3.5—4.5米。
三、注意事項
一是選擇正規(guī)途徑購買藥肥。購買時先查驗經(jīng)營許可證,確保藥肥質(zhì)量有保證。
二是嚴格按照使用說明推薦劑量用藥,不可盲目加大藥量。藥劑配制要進行二次稀釋,藥肥溶解要充分,確?;炫渚鶆?,防止噴施過程中堵塞噴頭,影響噴施效果。
三是兩種或兩種以上藥劑混用時,需檢測是否發(fā)生拮抗現(xiàn)象,如有拮抗應(yīng)更換同類其它藥劑。
四是噴施作業(yè)前仔細檢修機械設(shè)備,試噴后正式作業(yè),確保機械無故障、作業(yè)合格。
五是提前規(guī)劃好飛行線路,避免漏噴或重噴。田邊地頭、林帶周邊大型植保無人機無法作業(yè)到的地方,采用人工補噴。
六是作業(yè)前依照有關(guān)法規(guī)提前公告,綜合評估潛在風(fēng)險,作業(yè)時設(shè)立警示牌,防止噴霧霧滴飄移造成非靶標生物毒害和周邊作物藥害,大規(guī)模施藥前須開展小范圍試驗。
七是無人機起降作業(yè)時,應(yīng)遠離障礙物和人員,作業(yè)人員應(yīng)穿戴必要的防護用品,避開噴霧下風(fēng)位,嚴禁在施藥區(qū)穿行,作業(yè)時禁止吸煙及飲食。
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