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大暑節(jié)氣到：高溫多雨，早稻收割晚稻插秧

2021-07-22 16:01:27 來源：農(nóng)機(jī)網(wǎng)整理發(fā)布 閱讀量：23001 評(píng)論

導(dǎo)讀：大暑節(jié)氣，正值我國(guó)雙搶之時(shí)，也是一年之中最緊張、最艱苦的時(shí)候，因此在高溫環(huán)境下，需要進(jìn)行早稻搶日，晚稻搶時(shí)

　　【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 今天是二十四節(jié)氣之一的大暑節(jié)氣，也是夏季最后一個(gè)節(jié)氣。大暑相對(duì)小暑，更加炎熱，是一年中日照最多、最炎熱的節(jié)氣，“濕熱交蒸”在此時(shí)到達(dá)頂點(diǎn)。大暑氣候特征：高溫酷熱，雷暴、臺(tái)風(fēng)頻繁。
 
　　大暑時(shí)節(jié)雖然陽光猛烈、高溫潮濕多雨，悶熱難耐，卻十分有利于農(nóng)作物成長(zhǎng)，農(nóng)作物在此期間成長(zhǎng)最快，同時(shí)也迎來了搶收搶種。
 
　　農(nóng)耕生產(chǎn)與地 氣理氣候條件密切相關(guān)。季風(fēng)氣候是我國(guó)氣候的主要特點(diǎn)，季風(fēng)氣候是大陸性氣候與海洋性氣候的混合型，季風(fēng)氣候表現(xiàn)為雨熱同期，雨熱同期有利于農(nóng)作物成長(zhǎng)。從降水的季節(jié)分布狀況來看，我國(guó)的降水主要集中在夏季，尤其是大暑節(jié)氣，高溫酷熱、雨量充沛，是萬物狂長(zhǎng)的時(shí)節(jié)。在高溫季節(jié)，農(nóng)作物生長(zhǎng)旺盛，需要大量水分，而夏季正是我國(guó)降水最多、最集中的季節(jié)，高溫期與多雨期一致，水熱搭配好，對(duì)農(nóng)作物的生長(zhǎng)十分有利。由于我國(guó)的降水主要是由東南季風(fēng)帶來海洋的水汽而形成，受夏季風(fēng)的影響，降水自東南沿海向西北內(nèi)陸逐漸減少。從降水的季節(jié)分布狀況來看，我國(guó)的南方熱帶和亞熱帶地區(qū)是典型的雨熱同期；我國(guó)北方的華北、東北等地區(qū)的降水主要集中在夏秋之交，雖雨季短、降雨量少，但也是表現(xiàn)為“雨熱同期”的氣候特征，所以我國(guó)北方的華北、東北等地區(qū)氣候也是屬于“雨熱同期”。光照充足、降水豐沛、高溫濕潤(rùn)的雨熱同期是我國(guó)非常優(yōu)越的氣候資源，十分適宜農(nóng)作物生長(zhǎng)。
 
　　早稻收獲及晚稻插秧
 
　　大暑節(jié)氣，正值我國(guó)雙搶之時(shí)，也是一年之中最緊張、最艱苦的時(shí)候，因此在高溫環(huán)境下，需要進(jìn)行早稻搶日，晚稻搶時(shí)，早稻到了收獲時(shí)期，就需要減少后期風(fēng)雨造成的各種病蟲害，確保豐產(chǎn)豐收，然后晚稻適時(shí)栽插，能夠爭(zhēng)取晚稻快速生長(zhǎng)，靈活安排，晴天多割，陰天多栽，一般在7月底將完成此項(xiàng)工作。
 

 

　　病蟲害防治
 
　　高溫天氣，病蟲害總是爆發(fā)的高峰期，在這個(gè)時(shí)候需要做好病蟲害的防治工作，比如稻區(qū)的稻縱卷葉螟、稻飛虱、稻瘟病、紋枯病等，玉米田的玉米螟、玉米粘蟲、草地貪夜蛾、銹病等都要做好全面防治，以免出現(xiàn)造成農(nóng)作物減產(chǎn)，損失收入。對(duì)于沒有發(fā)生病蟲害的，應(yīng)該提前做好預(yù)防工作。
 
　　防旱排澇
 
　　大暑一到，溫度很高，田間水分蒸發(fā)快，農(nóng)作物生長(zhǎng)需要充足的水分才能正常生長(zhǎng)，所以一旦遇到干旱，就會(huì)影響作物生長(zhǎng)，需要及時(shí)進(jìn)行灌溉，大暑節(jié)氣也是發(fā)生洪澇比較嚴(yán)重的時(shí)候，一旦發(fā)生洪澇，田間就很容易發(fā)生病蟲害，要做好排澇工作，針對(duì)澇災(zāi)嚴(yán)重的地塊，要適時(shí)改種其他抗?jié)匙魑铮瑴p少損失。
 
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