Increasing the number of seedlings per hill with reduced number of hills improves rice grain quality by optimizing canopy structure and light utilization under shading stress

Fei Deng, Bo Li, Yujie Yuan, Chenyan He, Xing Zhou, Qiuping Li, Youyun Zhu, Xiaofan Huang, Yuxin He, Xiaofeng Ai, Youfeng Tao, Wei Zhou, Li Wang, Hong Cheng, Yong Chen, Mingtian Wang, Wanjun Ren