有效灌溉面积是衡量区域粮食安全的重要指标。研究表明:新疆有效灌溉面积1999~2000年有一个大下滑,之后增幅很小,且有效灌溉面积占总耕地面积的比值有下降趋势,并处于较低水平。有效灌溉面积减少的情势不容乐观,从1998~2004年年均有效灌溉面积减少量达2.167万hm2,其中粮食主产区面积减少占45%。新疆大部分地区粮食是自给自足,有效灌溉面积的减少势必会影响当地粮食安全,进而影响当地人民的安居乐业。 Effective irrigated area is an important indicator of regional food security. The results show that the effective irrigated area in Xinjiang has a big decline from 1999 to 2000, and the increase is small thereafter, and the ratio of effective irrigated area to total cultivated area has a downward trend and is at a low level. The area of ​​effective irrigated area is not optimistic. From 1998 to 2004, the average annual effective irrigated area decreased by 21,670 hm2, of which, the area of ​​major grain producing areas decreased by 45%. In most parts of Xinjiang, food is self-sufficient. The reduction of effective irrigation area will inevitably affect local food security and thus affect the livelihood of local people.