Effect of tillage system on rain-fed maize yield and soil physical characteristics for one film used two years
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Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou 730070, China; Faculty of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;,Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou 730070, China; Faculty of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;,,,,

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S341.1; S152.7

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    Abstract:

    This study aimed to optimize the tillage system and realize the effect of maize production and efficiency increased under the completely film mulched alternating narrow and wide ridges with furrow planting for one film used two years, stable-increasing grain yield and protecting soil quality in The experiments were conducted on the effect of tillage system including subsoiling tillage - no tillage, no tillage - no tillage, rotary tillage - no tillage, and traditional tillage- no tillage (as the control) on maize yield, water use efficiency (WUE), economic efficiency, soil physical characteristics under the completely film mulched alternating narrow and wide ridges with furrow planting under one film used two years, the results showed that the system of subsoiling tillage - no tillage could significantly increased the grain yield, WUE, harvest index, total output value and output ratio, which increased by 22.8%, 22.0%, 15.0%, 17.4% and 17.4%, respectively, compared to that of the control under the completely film mulched alternating narrow and wide ridges with furrow planting. Meanwhile,the system of subsoiling tillage - no tillage could reduce the soil surface bulk density and soil compaction, increase soil total porosity, the content of large mechanical stability aggregates and waterstable aggregates. Above of which indicated that the maize yield and incomes were promoted and soil physical characteristics were protected used the tillage system of subsoiling tillage - no tillage under the completely film mulched alternating narrow and wide ridges with furrow planting, it should be widely extended in maize production in hilly and gully region on loess plateau.

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History
  • Received:January 19,2016
  • Revised:March 18,2016
  • Adopted:March 21,2016
  • Online: June 30,2016
  • Published:
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