Li, Wenlong Han, Xiaozhuo Zhang, Yanyu Li, Zizhen Effects of Elevated Co2 Concentration, Irrigation and Nitrogenous Fertilizer Application onGrowth and Yield of Spring Wheat in Semi-Arid Areas - 106-114 p. Subjects--Topical Terms: Grain YieldSpring Wheat (Triticum Vulgare L.) YieldsWater Use Efficiency