冬小麦期覆盖秸秆对夏玉米土壤水分动态变化及产量的影响  

Effect of Straw-mulch during Wheat Stage on Soil Water Dynamic Changes and Yield of Summer Maize

作　　者：于舜章[1] 陈雨海[1] 周勋波[1] 李全起[1] 罗毅[2] 于强[2] 

机构地区：[1]山东农业大学农学院,泰安271018 [2]中国科学院禹城综合试验站,北京100101

出　　处：《水土保持学报》2004年第6期175-178,共4页Journal of Soil and Water Conservation

基　　金：中国科学院禹城综合开放试验站基金项目(yc2002006)

摘　　要：以不覆盖的处理为对照,研究了冬小麦期覆盖秸秆对夏玉米土壤水分动态变化及产量的影响。结果表明,秸秆覆盖有明显的增产效果。受充足的降雨影响,秸秆覆盖的保墒效果不太明显,但夏玉米的水分利用效率(WUE)有较大的提高。秸秆覆盖对表土层(0～30cm)具有明显的保墒效果,尤其是夏玉米生长前期。在深土层(100～110cm)秸秆覆盖处理的土壤含水率低于不覆盖处理,形成一个缺水带。一年两熟条件下,夏玉米可以充分利用夏季多雨的特性,结合秸秆覆盖措施,可提高对降雨的利用效率。Taking bare surface as CK, this paper discussed effect of straw-mulch during wheat stage on soil water dynamic changes and yield of summer maize. Results showed that mulched treatments had significant effect on increasing yield. Influenced by plenty of rainfall, effect of straw-mulch on saving water was not significant, however, straw-mulch was beneficial to the water use efficiency(WUE) of summer maize. Straw-mulch had significant effect on saving water of the surface soil(0～30 cm),especially in the front of growth period of summer maize. On deep soil layer(100～110 cm),the soil content of straw-mulch was lower than that of bare surface. Summer maize which may make best use of plenty of rainfall in summer had significant influence in increasing the use efficiency of rainfall if it was applied with straw-mulch.

关 键 词：冬小麦期 秸秆覆盖 夏玉米 土壤水分 动态变化 产量 

分 类 号：S512.11[农业科学—作物学] S152.75