Effect of Chemical Regulator on Photosynthetic Characteristics,Leaf Senescence and Yield of Spring Maize under Density-Increasing Condition
LI Chao, WANG Ji, ZHU Min, LI Fenghai
Journal of Henan Agricultural Sciences . 2021, (3): 33 -41 .  DOI: 10.15933/j.cnki.1004-3268.2021.03.005

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