论祁山堡对蜀军的牵制作用

祁山堡是曹魏的重要营堡。祁山堡的确易守难攻。蜀军在街亭战役中没有攻下祁山堡。因为祁山堡的牵制，蜀军在祁山一带滞留两天后再实行各路出击。这个“滞留两天”，导致了曹魏的雍州刺史郭淮、天水太守马遵回到了上邦城，进而导致了魏军马遵部固守上邦城、魏军郭淮部取得列柳城之胜、魏军张郜部及时赶到街亭。诸葛亮首次北伐的战略重点是安定郡。马谡是在向东北方向挺进的途中驻扎在街亭的。马谡与张郜对阵的街亭战斗是一场遭遇战。正是祁山堡使蜀军滞留两天，才导致蜀军马谡部守街亭进而失街亭。

On Qishan Fort Keeping the Shu Army at Bay

Qishan Fort was an important fort of the Wei State,which was easy to defend but hard to seize.In the Jieting Battle,the Shu Army failed in seizing Qishan Fort and worsely was held down by it and had to stay there for two days.Such "being stranded for two days" left Magistrates Guo Huai and Ma Zun of the Wei State enough time to rearrange and organize effective counterattacks and General Zhang He rushed at Jieting in time,who defeated Ma Su,General of the Shu State at Jieting.It was the two-day strand of the Shue Army at Qishan Fort that resulted in Ma Su's entry into and lose of Jieting later.