干旱地区农业研究2016，Vol.34Issue(2)：9-14,6.DOI:10.7606/j.issn.1000-7601.2016.02.02
辽西半干旱区秋覆膜对土壤水分及玉米水分利用效率的影响
Effects of plastic film mulching during autumn on soil water and water utilization of spring maize in dry land of northwest Liaoning
摘要
Abstract
Plastic film mulching in autumn is an innovation and extension technology of traditional plastic film mulching technology .In order to explore the effects of mulching during autumn on soil water and water use efficiency of spring maize ,four mulching treatments ,including traditional planting (T1) ,spring mulching (T2) ,autumn mulching (T3 ) and autumn mulching with straw return (T4 ) ,were carried out in Fuxin Scientific Observing and Experimental Sta-tion of Agro-environment and Arable Land Conservation ,to clarify the effects of different mulching treatments on soil wa-ter storage ,distribution ,crop yields and water use efficiency of spring maize .Our result showed that compared with T1 , T3 and T4 could increase the water storage before sowing by 35 .44% and 23 .09% ,respectively ,while by 40 .79% and 27 .95% ,compared with T2 .T3 and T4 could also increase water storage during the whole growth period by 30 .70%and 20 .10% ,37 .77% and 26 .59% ,respectively ,compared with T1 and T2 .The soil profile water was relatively abundant during the whole growth period ,while T2 had a very big variation in profile water ,which had a serious lack of water in subsoil .The maize yield by T3 was the highest ,which was 13 .26% and 13 .52% higher than that of T1 and T2 ,respectively .It was mostly contributed by the increase in single grain yield .Compared with T1 ,T2 and T4 ,T3 could increase water use efficiency by 8 .24% ,9 .74% and 8 .83% ,respectively .关键词
秋覆膜/春覆膜/蓄水量/剖面分布/产量/水分利用效率Key words
mulching in autumn/mulching in spring/water storage/water profile distribution/yield/water use ef-ficiency分类
农业科技引用本文复制引用
冯晨,孙占祥,郑家明,冯良山,白伟,张哲,张广才..辽西半干旱区秋覆膜对土壤水分及玉米水分利用效率的影响[J].干旱地区农业研究,2016,34(2):9-14,6.基金项目
国家科技支撑计划项目（2012BAD09B02）；辽宁省科技攻关项目（2014213004）；农业部公益性行业科研专项资金项目（201503105；201303125）；辽宁“百千万人才工程”培养经费资助项目 （）
