title: [Effects of alternate partial root-zone subsurface drip irrigation on potato yield and water use efficiency].
abstract: Field experiment was conducted to investigate the effects of alternate partial root-zone subsurface drip irrigation (APRSDI) on the physiological responses, yield, and water use efficiency of potato. Compared with conventional drip irrigation (CDI), APRSDI had less negative effects on the potato leaf photosynthesis rate (P(n)), but decreased the transpiration rate and stomatal conductance significantly. The slightly higher P(n) under CDI was at the expense of consuming more water. No significant difference was observed in the potato yield under APRSDI and CDI, but APRSDI saved the irrigation amount by 25.8% and increased the irrigation water use efficiency and total water use efficiency by 27.5% and 15.3%, respectively, suggesting that APRSDI would be a feasible water-saving irrigation technique for the planting of potato.
authors.affiliation: Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453003, Henan, China. zdhuang@126.com
authors.forename: Zhong-Dong
authors.initials: ZD
authors.lastname: Huang
authors.forename: Xue-Bin
authors.initials: XB
authors.lastname: Qi
authors.forename: Xiang-Yang
authors.initials: XY
authors.lastname: Fan
authors.forename: Chao
authors.initials: C
authors.lastname: Hu
authors.forename: Dong-Hai
authors.initials: DH
authors.lastname: Zhu
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.forename: Dong-Mei
authors.initials: DM
authors.lastname: Qiao
mesh_terms: D057914:Agricultural Irrigation / Q000379:methods*; D018533:Biomass; D018517:Plant Roots / Q000378:metabolism; D011198:Solanum tuberosum / Q000254:growth & development* / Q000378:metabolism; D014867:Water / Q000378:metabolism*
chemical_list: D014867:Water