Evaluation on winter wheat water use efficiency in the haiheriverAuthor(s): JingWang, Fuhai Liu, Yuping Han, Jinzhong Yang
Based on the definition of WUE and reliable data sources officially published by the government, winter wheat WUE in the Haiheriver is evaluated. The results indicate that the three-year average winter wheat WUE in the Haiheriver is 0.89kg/m3. Less than 0.89kg/m3 winter wheat WUE appears in the seven regions accounting for more than 90% area in the Haiheriver. And it is the lowest in Inner Mongolia, winter wheat WUE is 0.35kg/m3. And 1.77kg/m3 winter wheat WUE comes out in Beijing. Compared with the present national winter wheat WUE in China, 0.8kg/m3~1.6kg/m3, winter wheat WUE in the Haiheriver remains a lower level. And it means winter wheat WUE in the Haiheriver has a great potential to improve in the future. With lower water consuming, higher winter wheat yield and WUE in Beijing, cultivated measures and management way in Beijing should be taken references by the other seven regions in the Haiheriver in order to improve winter wheat yield and WUE with lower water consuming.