[Effects of alternate partial root-zone subsurface drip irrigation on potato yield and water use efficiency].
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.
Huang
Zhong-Dong
ZD
Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences, Xinxiang 453003, Henan, China. zdhuang@126.com
Qi
Xue-Bin
XB
Fan
Xiang-Yang
XY
Hu
Chao
C
Zhu
Dong-Hai
DH
Li
Ping
P
Qiao
Dong-Mei
DM
D057914:Agricultural Irrigation / Q000379:methods*; D018533:Biomass; D018517:Plant Roots / Q000378:metabolism; D011198:Solanum tuberosum / Q000254:growth & development* / Q000378:metabolism; D014867:Water / Q000378:metabolism*
D014867:Water