Impact of drip and level-basin irrigation on growth and yield of winter wheat in the North China Plain

A field experiment was conducted for 3 consecutive years (2007-2009) to study the effects of two different irrigation methods, that is, level-basin irrigation (BI) and drip irrigation (DI), and different treatment levels on crop growth, yield, and WUE of winter wheat (Triticum aestivum L.) in the North China Plain (NCP). The results indicate that irrigation methods and treatment levels had significant effects on crop growth and yield of winter wheat. Irrigation amounts significantly influenced plant heights, LAI, and winter wheat grain yields (P < 0.05 level) for both irrigation methods. Further, the DI method significantly improved yield and WUE compared with the BI method (P < 0.05 level) under conditions of deficit irrigation. Without irrigation system investment consideration, crop water productivity was highest when DI was used and irrigations were scheduled when soil water was depleted to 60 and 50 % of field capacity.