Experimental Study on the Growth and Yield of Winter Wheat under Different Irrigations and Nitrogen Applications
DU Juanjuan
LI Fenchan
Abstract：Field experiments were conducted from 2011 to 2014 in Linfen Irrigation Experimental Station of Shanxi province in attempts to investigate the impact of different irrigations and nitrogen applications on physiological traits (leaf area,dry weightand yield) of winter wheat,as well as the relationship between yield and water and fertilizer amount.The results showed that an appropriate combination of irrigation and nitrogen effectively increased the leaf area.For example,the average leaf area at different growth stages in Treatment 3 was 32.3％ higher than that in Treatment 2.Water deficiency caused by either insufficient irrigation or decrease in precipitation in 2012-2013 limited the use efficiency of nitrogen fertilizer.When annual precipitation was relatively low,thedry-mass weight under different nitrogen treatments did not show significant difference,and the accumulation of dry-matterinTreatment 2 was the lowest among all the treatments during the three-year experiment.At the same irrigation,the fertilizer amount and yield was parabolically related and the nitrogen and water interacted positively.Therefore,appropriately manipulating irrigation and nitrogen application can improve leaf area,drymatterweight so as to achieve high yield.
Keywords：winter wheatwater and fertilizer conditiongrowthyieldspositive interaction
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 30-34 )