Effects of prohexadione calcium spraying during the booting stage on panicle traits, yield, and related physiological characteristics of rice under salt stress per XiXin Huang, Dianfeng Zheng, Naijie Feng, Anqi Huang, Rongjun Zhang, Fengyan Meng, Yin Jie, Baomin Mu, Dewei Mu, Hang Zhou