曹操水淹下邳,吕布被擒,“水攻”究竟厉害在哪?

2025-03-10 11:22:17
推荐回答(1个)
回答1:

曹操擒获吕布时,用了一招“水淹下邳”,“水攻”看似古代战场上常用的招数,可是其厉害之处却没几个人能真正感受的到。水淹之法究竟有多厉害呢?如果您想知道,就让小编来为您揭秘。

吕布作为三国中的头号战将,曾一度稳坐三国武力值排行榜首位,即使是像关羽张飞这样的猛将,也无法撼动其地位。可吕布却败在了曹操的手中,当然,曹操是“斗智不斗力”。吕布自从中了陈登父子的诡计之后,便彻底失去了对曹刘联军战争的主动权,先是丢了徐州,接着又丢了小沛,只能在泗水河边的下邳城安身等待救援。

曹操率军对下邳城攻了近两个多月,却依然毫无进展,此时谋士郭嘉与荀彧二人提出了“水淹之策”,掘开沂水和泗水,用引水淹城的办法来挫败吕布。果然,在大水的淹灌之下,吕布军心大乱,吕布又每日醉酒度日,致使手下将领心思生变,最终将吕布赤兔马盗出,趁其睡着时绳捆索绑,再与曹操里应外合攻进下邳城。此时,我们若想揭开水攻的厉害程度,就必须从两军的各自实力入手,首先比较一下曹吕二军的优劣形势。

我们先说曹军,此时曹操已经将下邳城团团围住,不但人数众多,而且刚刚用计攻下徐州与小沛,士气正旺。可是曹操也有烦恼,此次曹军的远征留下了空虚的后方,袁绍在北方虎视眈眈,东面的刘表张绣也蠢蠢欲动,都想着趁曹吕二虎相争之时捡一个大便宜。此外,远道而来的曹军,其军粮补给也是大问题,军粮的缺乏也注定了曹军不能久战,只能速战速决拿下下邳城。再谈吕布,此时的吕布也不好过,虽然自己神威过人,可面对着连丢徐州、小沛二城的惨况,军队士气极低。幸好仗着城防坚固,且先前早已将徐州的军粮调往小沛,这才使得城内兵士衣食无忧,对抗劳师远征的曹军也算是绰绰有余。毫不夸张的说,只要吕布能等来袁术或他人的救援,必然在内外夹击之下将曹军击败。


此时问题来了,难道放水淹没下邳,吕布就支持不住了?要知道,吕布在曹军放水时,依然坚持了两个月,在此期间下邳城墙依旧坚固如铁,下邳城的粮食也没有随水飘走,城内的军士也没有被淹死,如此水淹似乎并没有产生太大的作用。可为何最后下邳城还是破了?水淹之策究竟厉害在哪里?在我们的印象中,只要掘开河道引水入城,就能将敌方的军事设施冲垮,城池内所有的敌兵也将成为洪水之下的冤魂,随后大军长驱直入,即可拿下城池。不过我们的这种想法只是受现代电视剧的影响罢了,真正的水淹之策的精髓并非靠“冲”,而是靠“泡”。

我们可以设想一下,下邳城紧邻泗水,其地势极低,而曹军则是由上而下的俯攻。正所谓“水往低处流”,只要掘开河道河水向下邳城倒灌,大水将会源源不断的将城池“泡”起来。更可怕的不仅是“泡”,懂得物理学的朋友们都知道,由于下邳城内水井的饮用水都来自地下水系,因此泗水已经和下邳城成了一个偌大的“连通器”,而这个巨大的“连通器”通过自身水压调节,地下水会沿着鼠洞,裂隙和井口“咕嘟嘟”地冒出来,会让下邳城内的水位与城外流淌的泗水一样高,也就是说,下邳城此时所有的设施都处在一片汪洋之中。

正所谓“水火无情”,下邳城内的士兵、马匹、粮食、草料、军械等,一律都被浸泡在水中。我们都知道,洪水所带来的祸害并非一时,而是“长尾”效应。在脏水的浸泡之下,先是粮食与草料发霉变质,导致士兵无法食用,吃不饱肚子的士兵自然体质虚弱,哗变的可能性也随之大增。接着便是饮水问题,别以为大洪水过后就有饮不完的水,其实洪水中掺杂着各类动物尸体与不洁净之物,如果人直接饮用,必然会造成瘟疫流行,这也是为何古语中有“洪水之后必大疫”的原因。此时有读者会灵机一动,为什么不将水烧开了喝呢?这种想法确实很机智,可是被水浸泡的劈柴,又如何能点燃烧水呢?

更重要的一点是,士兵整日被泡在脏水里,其身体也必然会出现各种疾病,再加上兵器、甲胄、弓箭等等被脏水泡的锈蚀、箭羽脱落甚至不能穿用,士兵的战斗力必将大打折扣。在如此状况下,一般的城池少则十数天,多则一个月,必然会土崩瓦解,而下邳城能够坚持两个月,可谓是奇迹中的奇迹了。历史上的水攻确实颇有成效,如秦灭魏之战中,秦军曾引黄河之水倒灌大梁城,又如关羽在樊城之战中著名的“水淹七军”,都是军事历史上的经典,为后世军事家们提供了可以引用和借鉴的战例,而古代军事家高超的战争智慧,真的可以让后人为此感到骄傲和自豪。

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