Abstract:The effects of improved iron nutrition of peanut(Arachis hypogaea L.) intercropped with maize (Zea mays L.) on photosynthesis rate, the transport of products of photosynthesis from shoot to root and nodule, the content of sucrose and soluble sugar in different organs of peanut, carbon and nitrogen metabolism and nitrogen-fixing of peanut nodule and its related enzyme activity were studied on calcareous soil in pot experiment. Iron deficiency chlorosis occurred in the young leaves of peanut in monocropping a...