摘要
According to an annual flagship report produced jointly by the FAO and several other organizations,almost 690 million people,or 8.9 percent of the world’s population,were still suffering from chronic hunger in 2019(FAO et al.,2020).
基金
supported by the Major Science and Technology Projects of Zhejiang Province(2021C02020)。
作者简介
Corresponding author:Jinping Si,email:lssjp@163.com。
