推荐回答（4个）
军屯农的原理，具体是这么算的：
士兵数15000或以下时，军屯农是农场Lv1的1倍——就是说一个军屯农至少相当于一个农场Lv1
士兵数15000以上时，按比例增长，军屯农是农场Lv1的（城中士兵数/15000）倍：
即20000兵时为1.33倍，30000兵时为2倍，60000兵时为4倍，90000兵时为6倍，……150000兵时为10倍
何时该造军屯农
由于农场Lv3是农场Lv1的1.5倍，军屯农在士兵数为22500时是农场Lv1的1.5倍。
那么显然士兵数不足22500时不要造军屯农，因为还不如造农场Lv3。
而与榖仓相邻的农场Lv3就是农场Lv1的2.25倍了，军屯农在士兵数为33750时是农场Lv1的2.25倍。
那么士兵数不足33750时不要把原来可以被榖仓相邻的农场改造军屯农。
军屯农是否划算
农场Lv1可以提供的收入
在初级难度下， 1个农场Lv1 +1875粮/季 计算得 军屯农 1兵可产出 0.125粮/季
在上级难度下， 1个农场Lv1 +1500粮/季 计算得 军屯农 1兵可产出 0.100粮/季
在超级难度下， 1个农场Lv1 +1125粮/季 计算得 军屯农 1兵可产出 0.075粮/季
而城中士兵的耗粮如下
初级难度时 1兵耗 0.225粮/季
上级难度时 1兵耗 0.125粮/季
超级难度时 1兵耗 0.200粮/季
（与本主题不相关的话：出征时各个难度都一样，即 1兵耗 1粮/10天 地球人都知道）
对比一下可知 此消彼涨之中“消”得更多
由此5iwan得出一点:造军屯农并不是为了增加兵粮收入，而是为了减少兵粮消耗。
如果为了增加兵粮收入而特意去造军屯农，那为了增加效果就得有更多士兵从而耗粮更多，
如前所说此消彼涨之中“消”得更多，总的还是亏，因此不但不是增收反而会多耗。
造军屯农的意义
造军屯农是迫不得已而为之
而在游戏中正常的兵力分配也应当是前方多后方少，当前方城池兵力很多时造军屯农就比
造农场收益大很多，而后方兵力少时造军屯农就等于是给自己减产！
总结
①造军屯农总是亏的，但有时是不得已而为之，是为了亏得更少
②造军屯农的时机:即前面所讲的士兵数22500及33750两个建造点
军屯农是与你的城市的兵力成一个比例的，当你的城市兵力达到三万，那军屯农的收益是农场1级的2倍，兵力到六万是是1级农场的4倍收入。就是说兵力越多，所建军屯农的城市的兵粮收入就越多。
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