Dai Wanhong,LÜ,Dianqing,et al.Influence of Fertilization on Water Utilization Efficiency and Grain Yiel d in Rainfed Wheat Field in Guanzhong Region[J].Research of Soil and Water Conservation,1996,3(03):96-99.
关中雨养麦田施肥的节水增产效应研究
- Title:
- Influence of Fertilization on Water Utilization Efficiency and Grain Yiel d in Rainfed Wheat Field in Guanzhong Region
- Keywords:
- rainfed wheat field; fertilization; WUE; grain yield
- 摘要:
- 采用田间定位试验方法研究了关中土区雨养麦田施肥对小麦产量和水分利用效率的效应.结果表明:增施肥料能显着提高该区雨养麦田的产量和水分利用效率,是充分利用此区自然降水,提高当前粮食产量的最有效途径;水分条件尚不足已强烈限制粮食产量的提高,反过来,干旱年份更能显示出施肥的节水增产效应.
- Abstract:
- The site field experiments were conducted on dryland of Guanzhong region in 1992-1994.Grain yield,water consumptions for winter wheat,the changes in moisture storage down to a depth of 2m,and water utilization efficiency were measured.The results show that there was extreme significance at 1 percent level among different treatments of fertilization and the effect of fertilizer on increased winter wheat yield and water utilization efficiency in verious arid year(1993-1994) was greater than that in common or humid year(1992-1993).It can be confirmed that the primary constraint for winter wheat yield at present in dryland of experimental region is poor fertility,not water deficit.
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备注/Memo
收稿日期:1995-9-10。