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春分是什么意思 春分是什么時候

作者: touqnq  2019-03-21 09:49 [查查吧] 來源:www.taokecps.com

  大家都知道,“春分”是二十四節氣中的一個,那么你知道“春分”是什么意思嗎?下面就讓我們一起來看看吧!

  春分是什么意思

  春分,春季九十天的中分點,古時又稱為“日中”、“日夜分”、“仲春之月”。《明史·歷一》說:“分者,黃赤相交之點,太陽行至此,乃晝夜平分。”所以,春分的意義,一是指一天時間白天黑夜平分,各為12小時;二是古時以立春至立夏為春季,春分正當春季三個月之中,平分了春季。

  每年公歷3月20日左右,太陽位于黃經0°(春分點)時,為春分。這一天,太陽幾乎直射地球赤道,全球各地幾乎晝夜等長(不考慮大氣對太陽光的折射與晨昏蒙影)。春分過后,太陽直射點繼續由赤道向北半球推移,北半球各地開始晝長夜短,即一天中白晝長于黑夜;南半球各地開始晝短夜長,即一天中白晝短于黑夜。故春分也稱升分。

  氣候:春旱、沙塵、倒春寒、低溫陰雨。

  農事活動:作物及時灌溉與播種。

  北方春季少雨的地區要抓緊春灌,澆好拔節水,施好拔節肥,注意防御晚霜凍害;南方仍需繼續搞好排澇防漬工作。江南早稻育秧和江淮地區早稻薄膜育秧工作已經開始,早春天氣冷暖變化頻繁,要注意在冷空氣來臨時浸種催芽,冷空氣結束時搶晴播種。群眾經驗說:“冷尾暖頭,下秧不愁。”要根據天氣情況,爭取播后有3—5個晴天,以保一播全苗。春茶已開始抽芽,應及時追施速效肥料,防治病蟲害,力爭茶葉豐產優質。

春分是什么意思 春分是什么時候
春分是什么意思 春分是什么時候(圖片來源:攝圖網)

  春分是什么時候

  每年公歷大約為3月20日左右,太陽位于黃經0°(春分點)時。春分這一天太陽直射地球赤道,南北半球季節相反,北半球是春分,在南半球來說就是秋分。春分是伊朗、土耳其、阿富汗、烏茲別克斯坦等國的新年,有著3000年的歷史。

  《月令七十二候集解》:“二月中,分者半也,此當九十日之半,故謂之分。秋同義。”

  《春秋繁露·陰陽出入上下篇》說:“春分者,陰陽相半也,故晝夜均而寒暑平。”

  2019年的春分是3月21日(農歷二月十五)。

  以上就是春分是什么意思,春分是什么時候的詳細信息,希望您能夠喜歡。

  推薦閱讀:

  二十四節氣表 二十四節氣的含義

  二十四節氣的詩歌表達 二十四首節氣詩歌

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