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Chinese Journal of Applied Ecology ›› 2001, Vol. ›› Issue (3): 398-400.

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Water distribution and microclimatic effects of sprinkler irrigation on spring wheat field

DU Yaodong, WANG Jian, LIU Zuoxin, CAI Chongguang, YANG Jiuting, GAN Zuoxun   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016;
    2. Institute of Soil and Water Conservation, of Liaoning Province, Chaoyang 122000
  • Received:1999-10-14 Revised:2000-01-14 Online:2001-05-25

Abstract: Measurements of sprinkler irrigation on spring wheat field indicated that spring wheat canopy could intercept water by 25~30%, and compared with that above canopy in first milking period, the uniformity coefficient below canopy could be increased by 7~9%. Floating and evaporation loss of sprinkler irrigation water could reach 20~25% of the total. In addition, sprinkler irrigation on spring wheat field could decrease air and soil temperature, and increase air actual vapor pressure and relative humidity, which played a definite role in restraining crop transpiration.

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