Study on the effect of different soil water content and soil fertility conditions on the photosynthetic conductance and yield in spring corn

carbon dioxide contenido de agua en el suelo dioxyde de carbone estoma fertilidad del suelo feuille hojas leaves mitochondria mitochondrie mitocondria photosynthese photosynthesis rendement rendimiento soil fertility soil water content stomata stomate teneur en eau du sol transpiration yields zea mays