Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (32): 142-147.doi: 10.11924/j.issn.1000-6850.casb15060106

Special Issue: 玉米 农业气象

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Effects of Drought Stress on Soil Moisture Dynamics and Water Use Efficiency in Corn

Ren Liwen1,2, Wang Xingtao2, Liu Mingchun2, Ding Wenkui2, Jiang Jufang2   

  1. (1Key Open Laboratory of Arid Change and Disaster Reducing of China Meteorological Administration/Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province/Institute of Arid Meteorological. China Meteorological Administration, Lanzhou 730020;2Wuwei Meteorological Bureau, Wuwei Gansu 733000)
  • Received:2015-06-18 Revised:2015-07-10 Accepted:2015-07-21 Online:2015-11-16 Published:2015-11-16

Abstract: To study the soil moisture dynamics and water use efficiency under drought stress condition, the authors designed an experiment with two modes including drought stress and normal irrigation treatment, to compare the soil water character, water consumption rules and water use efficiency. The results showed that: after the jointing period, the drought stress effects were obvious and the soil moisture under drought stress treatment was significantly lower than that under normal irrigation treatment. The water consumption after irrigation was significantly higher than that under drought stress treatment. Irrigation was the main factor affected the growth moisture condition of corn in this research area. The corn water consumption per day under normal irrigation treatment increased 1.4-7.0 times compared with that under drought stress treatment after entering reproductive growth stage. The corn yield was seriously affected by drought and declined 54.6%. But the corn water use efficiency under drought stress increased 27.3% than that under normal irrigation treatment.