Nitrogen spraying affects seed Bt toxin concentration and yield in Bt cotton
ZHANG Xiang, ZHOU Ming-yuan, LI Ya-bing, LIU Zhen-yu, CHEN Yuan, CHEN De-hua
Journal of Integrative Agriculture . 2021, (5): 1229 -1238 .  DOI: 10.1016/S2095-3119(20)63243-9