基于虚拟水的广西农业产业结构优化

发布时间：2019-01-19 09:23

【摘要】：虚拟水战略是农业产业结构优化的有效途径之一。通过测算分析广西主要农作物的虚拟水含量,对其农业产业结构进行优化。结果表明:广西主要农作物的虚拟水含量差异非常大,油菜籽的虚拟水含量高达8.733 m3/kg,是蔬菜的54倍。2000-2014年,农作物虚拟水含量的变化趋势也不尽相同,稻谷、甘蔗、木薯和蔬菜较为平稳,小麦、油菜和烤烟处于波动状态,豆类、薯类和玉米总体呈下降趋势。经规划后,各主要农作物的种植面积都有不同程度的调整。与现有种植模式相比,经济效益模式的农作物产值增加了5.43%、但水资源总体消耗量依旧很大,生态效益模式的农业产值基本持平,但其虚拟水总量却减少5.47%。在此基础上,提出了广西农业产业结构的优化对策。
[Abstract]:Virtual water strategy is one of the effective ways to optimize agricultural industrial structure. By calculating and analyzing the virtual water content of main crops in Guangxi, the agricultural industrial structure was optimized. The results show that the virtual water content of main crops in Guangxi is very different. The virtual water content of rapeseed is as high as 8.733 m3 / kg, which is 54 times of that of vegetables. Sugar cane cassava and vegetables were stable wheat rape and flue-cured tobacco fluctuated while legumes potato and corn showed a general downward trend. After planning, the planting area of each major crop has varying degrees of adjustment. Compared with the existing planting model, the crop output value of the economic benefit model increased 5.43 percent, but the total consumption of water resources was still very large, the agricultural output value of the ecological benefit model was basically equal, but the total virtual water volume was reduced by 5.47 percent. On this basis, put forward the optimization countermeasures of Guangxi agricultural industrial structure.
【作者单位】：广西师范大学环境与资源学院;岩溶生态与环境变化研究广西高校重点实验室;
【基金】：国家自然科学基金项目(41601039,41261005) 广西自然科学基金项目(2015GXNSFBA139186) 广西哲学社会科学规划课题(13CJY005) 广西高校科研项目(KY2015LX014) 广西高校重点实验室研究基金项目“岩溶生态与环境变化研究”(YRHJ16Z001,YRHJ15Z007) 广西师范大学博士科研启动基金项目(2016BQ004)
【分类号】：F321;S27

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