[Water-saving mechanisms of intercropping system in improving cropland water use efficiency].
Based on the multi-disciplinary researches, and in terms of the transformation efficiency of surface water to soil water, availability of cropland soil water, crop canopy structure, total irrigation volume needed on a given area, and crop yield, this paper discussed the water-saving mechanisms of intercropping system in improving cropland water use efficiency. Intercropping system could promote the full use of cropland water by plant roots, increase the water storage in root zone, reduce the inter-row evaporation and control excessive transpiration, and create a special microclimate advantageous to the plant growth and development. In addition, intercropping system could optimize source-sink relationship, provide a sound foundation for intensively utilizing resources temporally and spatially, and increase the crop yield per unit area greatly without increase of water consumption, so as to promote the crop water use efficiency effectively.
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shanxi, China. fyzhang197991@163.com
Feng-Yun
FY
Zhang
Pu-Te
PT
Wu
Xi-Ning
XN
Zhao
Xue-Feng
XF
Cheng
D057914:Agricultural Irrigation; D000383:Agriculture / Q000379:methods*; D002681:China; D003247:Conservation of Natural Resources; D018556:Crops, Agricultural / Q000254:growth & development*; D004526:Efficiency; D018517:Plant Roots / Q000502:physiology; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis / Q000502:physiology*; D014872:Water Movements
D012987:Soil; D014867:Water