应用生态学报2011，Vol.22Issue(10)：2517-2523,7.
不同灌水模式对冬小麦籽粒产量和水、氮利用效率的影响
Effects of different irrigation modes on winter wheat grain yield and water- and nitrogen use efficiency.MEN
摘要
Abstract
Taking the widely planted winter wheat cultivar Tainong 18 as test material, a field experiment was conducted to study the effects of different irrigation modes on the winter wheat grain yield and water- and nitrogen use efficiency in drier year (2009-2010) in Tai' an City of Shandong Province, China. Five treatments were installed, I. E. , irrigation before sowing ( CK) , irrigation before sowing and at jointing stage ( Wj ) , irrigation before sowing and at jointing stages and at over-wintering stage with alternative irrigation at milking stage ( W2) , irrigation before sowing and at jointing and flowering stages ( optimized traditional irrigation mode, W3 ) , and irrigation before sowing and at over-wintering, jointing, and milking stages (traditional irrigation mode, W4 ). The irrigation amount was 600 m3 ? Hm"2 one time. Under the condition of 119. 7 mm precipitation in the winter wheat growth season, no significant difference was observed in the grain yield between treatments W2 and W4, but the water use efficiency was significantly higher in W2 than in W4. Comparing with treatment W3, treatments W2 and W4 had obviously higher grain yield, but the water use efficiency had no significant difference. The partial factor productivity from N fertilization was the highest in W2 and W4, and the NO3"-N accumulation amount in 0-100 cm soil layer at harvest was significantly higher in W2 than in W3 and W4, suggesting that W2 could reduce N03~-N leaching loss. Under the conditions of our experiment, irrigation before sowing and jointing stages and at over-wintering stage with alternative irrigation at milking stage was the optimal irrigationmode in considering both the grain yield and the water- and nitrogen use efficiency.关键词
冬小麦/灌水模式/籽粒产量/水分利用效率/氮素利用效率Key words
winter wheat/ irrigation mode/ grain yield/ water use efficiency/ nitrogen use efficiency.分类
农业科技引用本文复制引用
门洪文,张秋,代兴龙,曹倩,王成雨,周晓虎,贺明荣..不同灌水模式对冬小麦籽粒产量和水、氮利用效率的影响[J].应用生态学报,2011,22(10):2517-2523,7.基金项目
国家重点基础研究发展计划项目(2009CB118602)和公益性行业(农业)科研专项(201103030)资助. （2009CB118602）
