| Water resources shortage is a key restrict factor for the agricultural sustainable development in inland of arid regions. In this paper, based on the concept model of growth drag by Romer，have measured the restrictive degree of water resources shortage to agricultural production in inland of arid region, taking the Minle County and Linze County in the middle stream of Heihe River as the typical research areas, by using the agricultural production data of 2000—2010. The results showed that: The average annual increasing growth rates of total agricultural output value in Minle County and Linze County was lower than the previous year 0.9979 and 0.6228 percentage respectively, because of water resources restraint. On the basis of these, was systematically analyzed the influence factors to growth drag, finally from the five aspects as improving the water saving establishment, structuring the long mechanism for irrigation and drainage installations, developing the feature water saving agriculture, increasing the social management level for the water resources and constructing the atmosphere of water saving society, put forward the related policy suggestions for how to reduce the restriction of water resource shortage to agricultural development in this regions. |