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地點(diǎn): 深圳市
開展時間: 2024-10-21
舉辦單位: 中紡流通(北京)會展有限公司
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地點(diǎn): 重慶市
開展時間: 2024-10-23
舉辦單位: 重慶市機(jī)械工程學(xué)會、重慶市電子學(xué)會、重慶市自動化儀器儀表學(xué)會
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地點(diǎn): 長沙市
開展時間: 2024-10-26
舉辦單位: 中國農(nóng)業(yè)機(jī)械流通協(xié)會、中國農(nóng)業(yè)機(jī)械化協(xié)會、中國農(nóng)業(yè)機(jī)械工業(yè)協(xié)會
【實(shí)用技術(shù)】當(dāng)前大豆田間管理重點(diǎn)
2024-07-04
09:16:34
來源:內(nèi)蒙古自治區(qū)農(nóng)牧廳 閱讀量:17564
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導(dǎo)讀:由于大豆主產(chǎn)區(qū)受出苗后持續(xù)低溫、陰雨寡照雙重影響,植株生長整體偏慢,部分地塊植株弱小,不同程度發(fā)生根腐病。
【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】由于大豆主產(chǎn)區(qū)受出苗后持續(xù)低溫、陰雨寡照雙重影響,植株生長整體偏慢,部分地塊植株弱小,不同程度發(fā)生根腐病。為促進(jìn)大豆植株快速恢復(fù)生長,防止病害進(jìn)一步加重和蔓延,建議廣大種植戶及時查田,盡快采取有效田管措施。
一是及時進(jìn)行中耕作業(yè)。低洼易澇地塊及時進(jìn)行鏟趟、中耕培土作業(yè),加快散寒、散墑,增加土壤透氣性,促進(jìn)幼苗恢復(fù)生長。
二是適時噴施生長調(diào)節(jié)劑和葉面肥。莖葉除草后緩苗地塊適時噴施生長調(diào)節(jié)劑和葉面肥,幫助快速緩苗,促弱轉(zhuǎn)壯。生長調(diào)節(jié)劑可選用蕓苔素內(nèi)酯或赤·吲乙·蕓苔(碧護(hù)),葉面肥用磷酸二氫鉀,稀釋后葉面噴施。
三是提前噴施殺菌劑和葉面肥。長勢較弱地塊要搶抓晴好天氣,及時噴施殺菌劑和葉面肥,增強(qiáng)植株抗病性,降低病害發(fā)生幾率。
四是及時采用藥劑防治。根腐病發(fā)生地塊及時開展藥劑防治,可選用精甲霜靈、精甲霜靈·咯菌腈、吡唑醚菌酯等藥劑兌水稀釋后土壤穴施防治。也可用甲霜·惡霉靈稀釋后噴霧或澆灌,噴霧盡可能將藥液噴施到莖基部,每7-10天施藥一次,連續(xù)防治2-3次(由于根腐病發(fā)生在根部,無論選擇哪種配方,都要保證藥水量充足)。
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