现行粮食补贴政策自实施以来，引起了学术界广泛的关注。
The current grain subsidies policy has caused widespread concern in academia since its implementation.
第五部分是阐述当前我国粮食补贴政策存在的问题及其产生原因。
The fifth part expose the existence problem and try to explain the reasons.
然而基于不同粮食作物，来定量研究现行粮食补贴政策增产效应的文献还比较有限。
However, the literature, based on different grain crops to research the yield effect of current grain subsidies policy by quantitative methods, is rare.
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