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Effects of Conservation Tillage on Water Use of Winter Wheat in North China Plain

LISu-juan, LILin, CHENFu, ZHANGHai-lin   

  1. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100094, China
  • Received:2007-05-18 Published:2007-12-30

Abstract: The object of this work was to evaluate the effects of conservation t illage and conventional tillage on soilmoisture dynamics, evapotranspiration ( ET) ,water use eff iciency (WUE) and winter wheat yield in long-term tillage exper-iment of North China plain.The tillage treatments included conventional tillage(CT) , conventional t illage with stubble incorporating(CTR) , rotary tillage with residue(RTR) , zero-tillage( ZT1) that direct drilled with standing stubble and zero-t illagewith residue( ZT2) .The results showed that no-tillage could increase soil moisture than conventional tillage in 0- 180 cmprof ile; and the moisture difference reduced as the soil layer increasing. Soil water storage showed with a wavy change in 0- 30 cm profile; and zero-tillage had a good effect on water storage. Soil water storage of 0- 180 cm profile was not signif-icance difference among the t illage treatments, but water storage of zero-tillage than that of conventional tillage; soil waterstorage with stubble incorporat ion was higher than that of without stubble incorpration. Evapotranspiration( ET) of ZT1 wasleast,which reduced water use 318, 3916, 5518 and 6118 mm respectively than CT, CTR, RTR, ZT2; however, the crop yieldand WUE of ZT1 was 5 13917 kg/ hm2 and 1319 kg/ (mm#hm2) , which compared conventional tillage( CT) respectively reduced29. 7% and 32. 4%.

Key words: Conservation t illage, Soil moisture, Winter wheat, WUE

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Cite this article

LISu-juan, LILin, CHENFu, ZHANGHai-lin. Effects of Conservation Tillage on Water Use of Winter Wheat in North China Plain[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.7668/hbnxb.2007.S1.029.

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