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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.