【摘 要】
：
Water availability is a major constraint for wheat production in many semiarid regions of the world,including the Loess Plateau of China,and thus improving the water use efficiency(WUE)becomes a main
【机 构】
：
黄土高原土壤侵蚀与旱地农业国家重点实验室,西北农林科技大学,中国陕西;西北农林科技大学生命科学学院,中国陕西
【出 处】
：
陕西省植物学会2018年学术研讨会
论文部分内容阅读
Water availability is a major constraint for wheat production in many semiarid regions of the world,including the Loess Plateau of China,and thus improving the water use efficiency(WUE)becomes a main research target.The impact of nitrogen(N)fertilizer on root growth,water use and WUE were examined for winter wheat grown in a semiarid farm on the Loess Plateau of China.A four-growing season field study(2011 to 2015)at the ChangwuAgri-ecological Station,Changwu,Shaanxi,China with four rates of N fertilizer(0,60,120 and 180 kg N ha?1)were conducted to determine soil water balance,root growth,yield and WUE in each growing season.Soil water content at final harvest in each growing seasonwas lower and evapotranspiration(ETg)was higher under N supply than under non-N fertilization.
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