山西农业大学学报（自然科学版）2018，Vol.38Issue(2)：9-14,6.DOI:10.13842/j.cnki.issn1671-8151.201712046
深耕对夏玉米产量形成及土壤理化性质的影响
Effects of deep tillage treatments on summer maize yield and soil physicochemical properties
摘要
Abstract
[Objectives]The present research was aimed to determine the effects of four tillage treatments on yield of summer maize and soil physicochemical properties.[Methods]Four different treatments,including rotary tillage with straw return (CK),deep tillage with straw return(DT),deep tillage(NDT)and alternative year deep tillage with straw return(ADT), were adopted in the fields that has been conducted site-specific trials for successive seven years(2009-2015).[Results]The results showed that the three deep tillage treatments significantly improved summer maize yield up to 17.6% compared with CK by increasing the numbers of ears per hm2,kernels per row,and 100-grain weight.Grain yields in DT and ADT treat-ments were averagely increased by 7.9% compared with NDT treatment,while no significant difference was detected be-tween DT and ADT..Statistical analysis on the change of yield components indicated that deep tillage treatments significant-ly improved root activity and leaf area index during grain filling stage.Moreover,the treatments improved soil physicochemi-cal properties.Compared with CK,soil thickness and effective topsoil quantity were increased by 58.9% and 59.2%,re-spectively in deep tillage topsoil treatments which also produced a decrease of bulk density by 10%.Soil contents of organic matter in 0~40 cm soil layer was increased by more than 10%,and soil enzyme activities in 0~20 cm soil layer was induced by more than 5%.[Conclusion]In summary,the application of alternative year deep plowing with straw return can be used as an effective way to keep higher efficiency of plowing with less cost in the west of Henan.关键词
夏玉米/深耕/秸秆还田/根系活力/产量Key words
Summer Maize/Deep Tillage/Straw Returning/Root activities/Yield分类
农业科技引用本文复制引用
王育红,席玲玲,周新,沈东风..深耕对夏玉米产量形成及土壤理化性质的影响[J].山西农业大学学报（自然科学版）,2018,38(2):9-14,6.基金项目
国家玉米产业技术体系(CARS-02) （CARS-02）
