Spatial-Temporal Characteristics in Grain Production and Its Influencing Factors in the Huang-Huai-Hai Plain from 1995 to 2018.

Int J Environ Res Public Health · 2020 · PMC7763685 · PMID 33317001

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an increasing trendno p-value reported

It can be seen from Figure 3 that the spatial variation in grain yield per unit of sown area in each city is very significant, and the overall grain yield shows an increasing trend.

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