遵义市主要粮食作物种植结构变化及黔川渝区域比较优势分析OA

The study aimed to clarify the location advantages of grain production in Zunyi City,and provide a theoretical basis for Zunyi City to optimize the layout of grain production and further expand production benefits.Based on the grain production data of Sichuan Province,Chongqing Municipality,and Guizhou Province from 2018 to 2023,and 14 counties(cities and districts)of Zunyi City from 2020 to 2023,the changing trend of the planting structure of major grain crops in Zunyi City was analyzed,and the theory of comparative advantage was applied.The comparative advantage index of the main grain crops in Zunyi City relative to those in Sichuan Province,Chongqing Municipality and Guizhou Province,as well as the comparative advantage status of grain production in different counties(cities and districts)within Zunyi were explored.From 2018 to 2023,the planting areas and proportions of rice,wheat and tubers in Zunyi City generally decreased,while the planting areas and proportions of corn,sorghum and soybeans generally increased.At the provincial level,Zunyi City had a significant comprehensive comparative advantage over Sichuan Province and Guizhou Province in terms of tubers,and also had a significant comprehensive comparative advantage over Chongqing Municipality in terms of wheat and tubers.At the municipal level,the rice crops of Honghuagang District,Bozhou District,Suining County,Meitan County,Fenggang County,Yuqing County and Zheng'an County,wheat of Tongzi County,Renhuai City and Xishui County,corn in Honghuagang District,Tongzi County,Chishui City,Meitan County,Yuqing County,Wuchuan County and Daozhen County,sorghum of Huichuan District,Bozhou District,Tongzi County,Renhuai City and Xishui County,soybeans of Honghuagang District,Huichuan District,Tongzi County,Renhuai City,Chishui City,Xishui County,Wuchuan County and Daozhen County,as well as the tubers of Huichuan District,Renhuai City,Chishui City,Meitan County,Fenggang County,Wuchuan County,Zheng'an County and Daozhen County had certain comprehensive comparative advantages over the average level of Zunyi City.Meanwhile,based on the comparative advantage index,the advantageous and disadvantageous areas for the production of major grain crops in Zunyi City were identified.Considering the factors such as grain output and agricultural output value comprehensively,Zunyi City should focus on the low-scale advantageous areas and low-scale disadvantageous areas of rice,optimize the planting structure,deeply explore the potential of rice scale,expand the scale of rice planting,and promote the increase of grain production.And focusing on the low-efficiency advantage areas and low-efficiency disadvantage areas of rice,wheat,corn,sorghum,soybeans and tubers,Zunyi City should strengthen technological empowerment,vigorously promote high-yield and high-efficiency technologies,increase the yield per unit area of grain crops on a large scale,actively explore the market,expand the grain industry,and continuously promote the sustained and healthy development of grain production.