Effect of different water-saving practices on growth and water use of potato
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DOI：10.7606/j.issn.1000-7601.2010.01.11
Key Words: soil matrix potential  drip irrigation  mulching film  superabsorbent polymer  WUE
Author NameAffiliation
LIN Yechun College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China 
HU Yuegao College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China 
ZENG Zhaohai College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China 
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Abstract:
      Potato (Solanum tuberosum L.) is an important food crop in the north of China, and it is very sensitive to water stress. Combination of plastic film, superabsorbent polymer (SAP) and drip irrigation system was made to study growth and w ater use of potato under different soil matric potential (SMP). The results presented that the treatments without mulching and SAP under different SMP at 20 cm soil depth had much higher rate of big middle size tuber, commercial tuber and IWUE; there were little significance on growth, yield and commercial attribute between the treatments with mulching film under different SMP, but lower SMP may weaken the capability of water saving of SAP. This research presents planting p otato with plastic film mulching should move up a date, and planting potato with SAP and drip irrigation is a good way to saving water and increasing yield.
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