Cultivation and Nitrogen Application Affect Yield and Water Use Efficiency of Winter Wheat in Qingyang of Gansu Province
ZHANG Huan
Abstract：A two-year field experiment was conducted in Gansu Province aimed to investigate the effect of culti-vation on soil moisture dynamics and water use efficiency (WUE) of winter wheat under different nitrogen appli-cations. The results showed that the temporal change of soil moisture was approximately the same under different treatments. Raised-bed planting and mulching with straw or plastic film could keep root zone (0~60 cm) moist-ened, especially in the early stage of the wheat growth.The impact of cultivation on yield varied. Mulching with plastic film gave the highest yield, while the yield under mulching with strawandraised-bed planting varied in the two years. Compared with the control, mulching with straw andraised-bed planting reduced the yield in 2009 by up to 10.4%, but increased the yield in 2010 by 4.5%to 6.9%. Nitrogen application also impacted water use effi-ciency (WUE). With nitrogen application rate of 120 kg/hm2 and 240 kg/hm2, the WUE increased by 1.1 and 2.0 kg/hm2 mm, respectively, compared with the control (without nitrogen application). Plastic-film mulching and raised-bed planting were shown to have increased WUE.
Keywords：cultivation methodsnitrogen fertilizer applicationsoil water content
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：6( 1-6 )