Effects of Tillage Managements in Wheat-maize CRop System on Soil Physical PRopeRties in SummeR Maize Season

doi:10.7668/hbnxb.2013.06.039

Abstract

Abstract: During wheat-maize whole season, with ten different tillage treatments, the effects of tillage manage-ments on soil physical properties in summer maize season were studied.Compared with silking and mid-filling stage, the soil water content was more largely affected by tillage treatments, and the highest water content in the layer be-tween 0-20 cm was found in A₂B₂R(No-tillage at either wheat season or at maize season +straw returning),and the highest water content in both 20-40 and 40-60cm were in A₁B₂R(Rotary tillage at wheat season +direct seeding maize+straw returning ).The average soil temperatures of 0-60 cm at both silking and maturity stage were highest in A₃B₂R (Subsoiling tillage at wheat season +direct seeding maize+straw returning) and A1B1R(Rotary tillage at both wheat season and maize season +straw returning),and were 0.4-0.6℃higher than that of control ( Rotary tillage at wheat season +direct seeding maize +no straw returning ).The bulk density in the 0-20 cm layer was decreased in treatments A₁B₂R,A₂B₂R and A₄B₂R(Deep tillage at wheat season +direct seeding maize+straw returning),A₃B₂R,A₄B₂R,A₃B₃R and A₄B₄R obviously decreased the deep layer (40-60 cm ) soil bulk density,especially A₃B₃R and A₄B₄R.Therefore,no-tillage at either wheat season or at maize season could decrease the bulk density in the surface layer and increase the water content.However,the deep tillage or subsoiling tillage mainly decreases the deeper soil bulk density, especially deep tillage or subsoiling tillage at both wheat and maize season.

Key words: Subsoiling tillage, Deep tillage, Soil bulk density, Soil wateR content, Soil tempeRatuRe

CLC Number:

S513
S152

LIU Shu-mei, QU Xiao-yan, ZHANG Hong-sheng, JIANG-Wen. Effects of Tillage Managements in Wheat-maize CRop System on Soil Physical PRopeRties in SummeR Maize Season[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(6): 226-230. doi: 10.7668/hbnxb.2013.06.039.

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