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地點(diǎn)： 重慶市
開(kāi)展時(shí)間： 2024-10-23
舉辦單位： 重慶市機(jī)械工程學(xué)會(huì)、重慶市電子學(xué)會(huì)、重慶市自動(dòng)化儀器儀表學(xué)會(huì)
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地點(diǎn)： 長(zhǎng)沙市
開(kāi)展時(shí)間： 2024-10-26
舉辦單位： 中國(guó)農(nóng)業(yè)機(jī)械流通協(xié)會(huì)、中國(guó)農(nóng)業(yè)機(jī)械化協(xié)會(huì)、中國(guó)農(nóng)業(yè)機(jī)械工業(yè)協(xié)會(huì)
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地點(diǎn)： 長(zhǎng)春市
開(kāi)展時(shí)間： 2024-10-28
舉辦單位： 中國(guó)長(zhǎng)城綠化促進(jìn)會(huì)、智奧會(huì)展(哈爾濱)有限公司
【今日大寒】天氣極寒，蔬菜、農(nóng)作物注意防寒保暖
2022-01-20
10:40:55
來(lái)源：農(nóng)機(jī)網(wǎng)整理發(fā)布 閱讀量：32528
評(píng)論
導(dǎo)讀：今天是二十四節(jié)氣之一的大寒，也是二十四節(jié)氣中的最后一個(gè)節(jié)氣，與立春相交接。冬去春來(lái)，大寒一到，新一年的節(jié)氣即將輪回。
【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 今天是二十四節(jié)氣之一的大寒，也是二十四節(jié)氣中的最后一個(gè)節(jié)氣，與立春相交接。冬去春來(lái)，大寒一到，新一年的節(jié)氣即將輪回。
大寒同小寒一樣，也是表示天氣寒冷程度的節(jié)氣，大寒是天氣寒冷到極致的意思。根據(jù)我國(guó)長(zhǎng)期以來(lái)的氣象記錄，在北方地區(qū)大寒節(jié)氣是沒(méi)有小寒冷的；但對(duì)于南方大部地區(qū)來(lái)說(shuō)，最冷是在大寒節(jié)氣。
大寒時(shí)節(jié)，在農(nóng)業(yè)生產(chǎn)中要掌握好冷暖變化規(guī)律，根據(jù)不同的年份、不同的地理位置、地形條件等，隨時(shí)關(guān)注氣象部門(mén)對(duì)各個(gè)時(shí)期的預(yù)測(cè)預(yù)報(bào)，合理種植農(nóng)作物，避免出現(xiàn)不必要的損失。特別是較大規(guī)模進(jìn)行引進(jìn)經(jīng)濟(jì)作物時(shí)，更是不能忽視；小規(guī)模種植時(shí)也要注意周?chē)牡匦苇h(huán)境，如在大水庫(kù)周?chē)?，由于水的調(diào)溫作用，其凍害往往較輕或沒(méi)有，可在寒冬之前將一些易受凍的經(jīng)濟(jì)作物和花草放置或種植在水庫(kù)四周。大棚作物根據(jù)天氣變化，做好溫濕調(diào)控，在中午前后揭開(kāi)大棚兩端進(jìn)行通風(fēng)，但下午4時(shí)以前必須關(guān)好，以保持棚內(nèi)溫度。
經(jīng)濟(jì)作物管理
大寒前后，江淮地區(qū)處于小(大)麥、油菜等大田作物的越冬期，前期施肥不足的油菜、大小麥等冬作要注意施用臘肥。如果小麥生長(zhǎng)過(guò)旺，畝總莖蘗數(shù)超過(guò)預(yù)期穗數(shù)的1.3~1.5倍，應(yīng)在晴暖天氣適時(shí)采用深耘斷根或鎮(zhèn)壓控制等措施。油菜、蠶豆等可松土培根、中耕除草，以增溫防凍。
蔬菜管理
及時(shí)移栽，加強(qiáng)管理。在下旬定植中小拱棚甘藍(lán)，番茄，定植前應(yīng)當(dāng)要提前5-7天左右扣棚升溫，選擇在晴天的上午進(jìn)行定植，并且加蓋草苫來(lái)保溫，促進(jìn)緩苗。對(duì)基肥不足的大棚可以在大寒后，在作物的大溝內(nèi)追施雞糞，翻入土壤中并要及時(shí)澆水，可以提高作物后期的產(chǎn)量。最后農(nóng)戶(hù)們還要加強(qiáng)對(duì)作物灰霉病、葉霉病、疫病、霜霉病、白粉病等的防控。
果樹(shù)管理
落葉果樹(shù)要繼續(xù)進(jìn)行修剪，新開(kāi)發(fā)的果園要搶晴好天氣來(lái)進(jìn)行苗木定植，果園內(nèi)要注意清溝排水，防水漬防凍。柑桔做好抗寒防凍和抗雪害工作，確保安全過(guò)冬;枇杷以花穗套袋或用花穗下部的葉片束捆花穗等方法，預(yù)防枇杷幼果凍害，認(rèn)真做好培*護(hù)根、主干涂白等防凍工作和防雪害工作。
畜牧管理
隆冬時(shí)節(jié)是畜禽疫病多發(fā)季節(jié)，在做好保暖防凍工作同時(shí)，應(yīng)積極做好畜禽的疾病防控工作，要控制豬傳染性腸胃炎，家禽要防禽流感；牛、羊、兔等禽草動(dòng)物夜間添加夜草。
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