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陇东素有“粮仓”之称。冬小麦为其主栽作物,播种面积通常约占粮播面积的六成。因此,冬小麦的丰歉对全年粮食总产具有举足轻重的作用。解放30年来,平均亩产由1949年的94斤上升到大丰收的1975年的286斤,面貌发生了较大变化,但与国家要求尚有很大距离。一则是亩产逐年递增率甚低,只有0.9%,30年平均单产只有125.7斤:再则是年度间单产变幅甚大,高低相比,竟达4.47倍。甚至到了70年代,歉收的1973年单产91斤,还较1949年单产低3斤,不足1975年的1/3(详见附表)。造成如此被动局面的重要原因,就是缺乏一个“以抗
Longdong known as “Granary” said. Winter wheat is the main crop, and the sown area usually accounts for about 60% of the grain sown area. Therefore, the apology of winter wheat plays a decisive role in the annual grain output. In the 30 years since the liberation, the average yield per mu has risen from 94 kg in 1949 to 286 kg in 1975, a big change in appearance. However, there is still a long way to go to meet the state requirements. One is the rate of increase of mu yield is very low year by year, only 0.9%, 30-year average yield of only 125.7 kg: Another is the annual yield range, the level compared to as much as 4.47 times. Even in the 1970s, a poor yield of 91 kilograms in 1973 was also 3 kg lower than the yield in 1949, less than one-third of that in 1975 (see attached table). An important reason for such a passive situation is the lack of a “resistance.”