京津唐夏玉米区生产现状调研分析

李雨新, 卢敏, 赵久然, 王荣焕, 徐田军, 吕天放, 蔡万涛, 张勇, 薛洪贺, 刘月娥

The Production Status Investigation and Analysis of Summer Maize in Beijing-Tianjin-Tangshan Region

Li Yuxin, Lu Min, Zhao Jiuran, Wang Ronghuan, Xu Tianjun, Lü Tianfang, Cai Wantao, Zhang Yong, Xue Honghe, Liu Yueʼe

图2 2016-2017年北京、天津、唐山及京津唐农户年龄分布情况

Fig.2 Age distribution of farmers in Beijing, Tianjin, Tangshan and the entire region in 2016-2017