灌溉排水学报2024，Vol.43Issue(4)：15-21,7.DOI:10.13522/j.cnki.ggps.2023212
黑土机械压实对玉米生长、产量及氮利用效率的影响
The effect of soil compaction on growth,yield and nitrogen use efficiency of maize in black soil
摘要
Abstract
[Objective]Black soil is widely distributed in northeastern China and other countries.Machinery operations in agricultural production in these regions has resulted in soil compaction.In this paper,we investigated the impact of soil compaction on growth,yield,and nitrogen use efficiency of maize in the black soil.[Method]The field experiment compared three soil compactions:low compaction(C1),moderate compaction(C2)and high compaction(C3).For each compaction,there were two fertilization treatments:nitrogen fertilization(F)and no fertilization(F0).In each treatment,we measured the growth,yield and nitrogen use efficiency of the maize.[Result]Increasing soil compaction significantly reduced leaf area index(LAI)and plant height of the maize.Nitrogen fertilization affected plant height significantly but did not impact LAI at significant levels.Soil compaction also impacted grain yield significantly,with the high and moderate soil compaction reducing grain yield by 24%and 10%,respectively,compared to the light compaction.Soil compaction and nitrogen fertilization combined to impact nitrate in the soil.Elaborated soil compaction inhibited maize growth,reduced nitrogen absorption,leading to an increase in residual nitrate nitrogen in soil as a result.Soil compaction also influenced nitrogen uptake and its subsequent translocation in the above-ground part of the maize.Nitrogen fertilization increased nitrogen absorption by the crop significantly,but reduced nitrogen use efficiency,especially in the high compaction treatment.[Conclusion]Elaborated compaction of the black soil due to machinery operations severely inhibited growth,absorption and use of nitrogen of the maize,thereby leading to an increase in residual nitrate nitrogen in the soil and reducing grain yield as a result.关键词
机械压实/黑土/玉米/产量/氮利用效率Key words
mechanical compaction/black soil/maize/yield/nitrogen utilization efficiency分类
农业科技引用本文复制引用
刘天宇,周统,杨乐,马守田,刘战东,高阳..黑土机械压实对玉米生长、产量及氮利用效率的影响[J].灌溉排水学报,2024,43(4):15-21,7.基金项目
中国农业科学院创新工程联合攻关重大科研任务(CAAS-ZDRW202202) （CAAS-ZDRW202202）
国家"十四五"重点研发项目(2021YFD1500700) （2021YFD1500700）
现代玉米产业技术体系项目(CARS-02) （CARS-02）
