Government subsidies, R&D expenditure and performance of agricultural listed companies：An empirical study based on 44 agricultural listed companies in Shanghai and Shenzhen A stock market

QIU Xiao-xue, ZHANG Ying

HUBEI AGRICULTURAL SCIENCES . 2020, (8): 206 -209 . DOI: 10.14088/j.cnki.issn0439-8114.2020.08.046