a research on modern agricultural operators in China 未来谁来经营农业：中国现代农业经营主体研究：a research on modern agricultural operators in China Research on western agricultural economics Ancient and modern agriculture in China Research on the path selection of agricultural modernization in China Research on the development of agricultural income insurance in China 并列题名：Research on the development of agricultural income insurance in China Research on modern agriculture industrial organization strategy Classic cases of modern agricultural development in northeast China Research on the modern agricultural system with Chinese characteristics