Assessing Crop Water Demand and Deficit for the Growth of Spring Highland Barley in Tibet, China

查看全文 作　　者：LIU Zhao-[1]fei;YAO Zhi-[1]jun;YU Cheng-[1]qun;ZHONG Zhi-[1]ming

机构地区：[1]Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences

出　　处：《Journal of Integrative Agriculture》索引2013年第12卷第3期,共11页

基　　金：supported by the Innovation Program of Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (201003013);the National Basic Research Program of China(2010CB951702) 摘　　要：The aim of this study was to assess the crop water demand and deficit of spring highland barley and discuss suitable irrigation systems for different regions in Tibet, China. Long-term trends in reference crop evapotranspiration and crop water demand were analyzed in different regions, together with crop water demand and deficit of spring highland barley under different precipitation frequencies. Results showed that precipitation trends during growth stages did not benefit the growth of spring highland barley. The crop coefficient of spring highland barley in Tibet was 0.87 and crop water demand was 389.0 mm. In general, a water deficit was found in Tibet, because precipitation was lower than water consumption of spring highland barley. The most severe water deficit were in the jointing to heading stage and the heading to wax ripeness stage, which are the most important growth stages for spring highland barley; water deficit in these two stages would be harmful to the yield. Water deficit showed different characteristics in different regions. In conclusion, irrigation systems may be more successful if based on an analysis of water deficit within different growth stages and in different regions. 关键词：作物需水量水分需求生长阶段春青稞西藏评估中国参考作物蒸散量

相关文献

参考文献（59）
引证文献（30）
耦合文献（390）

参考文献(59)

引证文献(30)

耦合文献(390)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Assessing Crop Water Demand and Deficit for the Growth of Spring Highland Barley in Tibet, China

参考文献(59)

引证文献(30)

耦合文献(390)

用户提示