2001-2022 年河南省花生生产动态变化.

Peanut is rich in edible vegetable oil and protein, which is one of the important sources of edible vegetable oil in China. To clarify the relative advantages of peanut production in various cities and to optimize the layout of peanut production and further improve the total production capacity of oil crops in Henan Province, we analyzed the spatiotemporal evolution characteristics of peanuts by using concentration and comparative advantage based on the production data of oil crops in Henan Province since 2001. Annual peanut yield showed an increase of 1.09 times in 2001-2022, accounted for 73.6% -90.7% of the total oil crop production in Henan Province. Since 2001, the distribution of peanuts had become more concentrated, with Nanyang and Zhumadian ranking among the top two production regions in the province. The concentration ratio (CR2) steadily increased from 28.1% to 53.0%. The peanut efficiency advantage indices of Nanyang, Zhoukou and Shangqiu were 1.031.35, 1.03-1.31 and 0.97-1.35, respectively. Nanyang, Zhumadian and Kaifeng had relatively obvious scale advantages, with the indices of 1.07-1.91, 1.56-2.14 and 1.39-1.83, respectively. In 2001-2022, Kaifeng had the comprehensive advantage index of 1.12-1.50 in peanut production. Over the same period, the advantage index rose from 1.08 to 1.41 in Nanyang, and increased from 0.81 to 1.44 in Zhumadian. As the most important oil crop in Henan Province, peanuts displayed a concentrated distribution trend. Nanyang and Zhumadian were the two core peanut production areas in Henan Province, with the peanut yield accounting for more than half of that in Henan Province. Kaifeng had obviously comprehensive advantages in peanut production, which however mainly relied on its prominent planting scale. In addition, both Zhoukou and Shangqiu showed a high level of peanut yield per unit area, but the relatively reduced planting areas. [ABSTRACT FROM AUTHOR]