近年来，在农业自然资源瓶颈以及人口持续增长等因素的影响下，中国粮食供求关系趋紧。
Recently, with the emergency of the shortage of natural resources and the continuous increase of the population, the relationship of grain supplies and demands become unbalanced gradually in China.
以至出现了2003年国庆节后和2004年春节后的两次全国范围内的粮食价格大幅上涨，粮食供求关系趋紧。
So there are price of food increased greatly in the whole country between the end of 2003 and the Spring Festival of 2004, and supply and demand of food became serious.
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