Effect of different planting density and nitrogen application on yield of Emai 195
DUAN Bao-quan, CHEN Bo, ZHANG Jun-hua, TAN Qing-feng, YANG Ze-fu
HUBEI AGRICULTURAL SCIENCES . 2020, (4): 21 -24 .  DOI: 10.14088/j.cnki.issn0439-8114.2020.04.005