Differences in Thresholds of Early Frost Damage for Sunflower Organs under Different Sowing Dates in the Hetao Irrigation District
LI Shu-qi, BAO Jia-jing, DUAN Xiao-feng, LIU Yan-li, LIU Jia, LIU Wei
Chinese Journal of Agrometeorology . 2026, (2): 293 -305 .  DOI: 10.3969/j.issn.1000-6362.2026.02.011