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Chinese Journal of Applied Ecology ›› 2018, Vol. 29 ›› Issue (8): 2501-2508.doi: 10.13287/j.1001-9332.201808.005

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Effects of conservation tillage on soil water condition and winter wheat yield in farmland

DING Jin-li1,2, WEI Hong-yi3, YANG Yong-hui2,4, ZHANG Jie-mei2,4, WU Ji-cheng2,4*   

  1. 1Zhengzhou Normal University, Zhengzhou 450044, China;
    2Institute of Plant Nutrition and Resource & Environmental Science, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    3Henan Branch of Construction and Administration Bureau of South-to-North Water Diversion Middle Route Project, Zhengzhou 450003, China;
    4Yuanyang Experimental Station of Crop Water Use, Ministry of Agriculture, Yuanyang 453514, Henan, China.
  • Received:2017-11-27 Online:2018-08-20 Published:2018-08-20
  • Supported by:

    This work was supported by the National High Technology Research and Development Plan (2013AA-102904) and National Key Research and Development Program of China (2017YFD0301102).

Abstract: Conservation tillage is one of the most important agricultural management measures on soil water conservation and crop yield increments. Based on long-term experiment during 2011 to 2016, effects of different tillage treatments, including conventional tillage, no-tillage and subsoiling treatments, on soil water condition, crop yield and water use efficiency were analyzed. The results showed that the average and relative soil water conservation rate was 7.3% and -0.68% at jointing stage of winter wheat under no tillage and subsoiling treatments, respectively. Compared with conventional tillage, soil water storage significantly increased in 0-60 cm soil layer at jointing stage of winter wheat under no-tillage. Besides, the mean values of soil water content significantly increased in 0-100 cm soil layer at jointing, flowering, filling, and harvesting stages under no tillage treatment while that was not significantly increased at jointing stage under subsoiling treatment. Furthmore, no-tillage treatment significantly increased the yield and water use efficiency of winter wheat, especially in the dry years. Therefore, soil moisture conservation ability and yield increment of no tillage was better than that of the subsoiling treatment in dry years.