Effects of plastic film-mulching in different stages on soil water content and spring maize yield of dryland in western Liaoning
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DOI：10.7606/j.issn.1000-7601.2009.06.22
Key Words: maize  plastic film-mulching  mulching time  soil water content  wate use efficiency  yield
Author NameAffiliation
XIN Dongxu College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
ZHANG Yulong College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
HUANG Yi College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
ZHANG Yuling College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
ZHANG Zheyuan College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
CUI Ning College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
SONG Wen College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
CHEN Fuqiang College of Soil and Environment Key laboratory of Agricultural Resources and Environment of Liaoning Province Shenyang Agricultural University， Shenyang， Liaoning 110161， China 
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Abstract:
      In order to make clear the effects of plastic film-mulching in autumn and in early spring on soil water content and spring maize yield of dryland in western Liaoning,field plot experiments were conducted in Jianping Country of Liaoning Province.The results showed that plastic film-mulching in early spring and in autumn before sowing could improve the water-holding capability of soil in the depth of 15 cm.The average yield of spring maize with plastic-film mulching in autumn and in early spring and traditional cultivation was 5 814.6 kg/hm2,4 997.33 kg/hm2 and 4 069.46 kg/hm2.Compared to the traditional cultivation,plastic film-mulching in early spring and in autumn could increase the average yield by 30.01% and 18.57% and increase water use efficiency by 18.45% and 29.43% respectively.
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