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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (2): 219-222.

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Yield increasing and water saving effect under different soil fertility improvements in wheat-corn intercropping field in Huabei Plain

ZHANG Zhongxue, WEN Jinxiang, WU Wenliang   

  1. School of Resource and Environment, China Agricultural University, Beijing 100094
  • Received:1999-09-10 Revised:1999-11-29 Online:2000-03-25

Abstract: Water resource in agriculture in Huabei Plain has been increasingly reduced in recent years.In order to reduce water evaporation and improve water utilization efficiency, the field experiment on water saving under different soil fertility improvements was carried out in Huantai county,Shandong Province.The result showed that straw incorporation and organic fertilizer application could increase yield and save water clearly.Under the same amount of irrigation(250mm),the field with all corn and wheat straw incorporation had a higher yield of 885kg穐m-2 than the field without straw incorporatiion, and a higher water efficiency of 3.13.The field with all corn and wheat straw incorporation and organic fertilizer application had a higher yield of 1875kg穐m-2 than the comparing field, with a higher water efficiency of 3.60.The field with wheat straw incorporation had a higher yield of 675kg穐m-2 than the comparing field,with a higher water efficiency of 3.24.The field with wheat straw incorporation and organic fertilizer application had a higher yield of 1200kg穐m-2 than the comparing field, with a higher water efficiency of 3.28.