Effect of Double-subsoiling Cover on Soil Water and Crop Yield in Hilly Arid Area
LI Jun-hong
YAO Yu-qing
L Jun-jie
ZHANG Jie
DING Zhi-qiang
YU Xin-feng
Abstract：In the paper ,the effects of double-subsoiling cover (DSC) on soil water content ,dry matter accumulation ,LAI ,water use efficiency and crop yield were studied under wheat-maize double-cropping system in hilly arid area .T he results indicated as follow :Compared to the tradi-tional tillage ,soil water content in 0-200 cm soil layer of DSC treatment was higher ,increased by 7 .8% -12 .8% in wheat season and 6 .8% -9 .3% in maize season ;The dry matter accumulation of w heat and maize in DSC treatment increased by 22 .2% -60 .7% and 19 .6% -39 .9% ,respec-tively ;The LAIs of wheat and maize for DSC were larger in all growth stages ,which increased by 28 .4% -91 .8% and 6 .7% -63 .5% ,respectively ;The water use efficiency of DSC was 22 .8 kg/(ha · mm ) ,increased by 39 .9% ;The total yield of wheat and maize in DSC treatment was 11 989 .5 kg/ha and increased by 11 .4% compared to traditional tillage ,the difference being sig-nificant .The result suggested that DSC could increase the soil water content ,dry matter accumu-lation ,LAI ,water use efficiency and crop yield .
Keywords：hilly arid areadouble-subsoiling coverwheatmaizesoil waterLAIdry matter accumulationyield
Publication Date：2013-11-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 17-20 )