摘要
Abstract
To reveal the long-term effects of deep ploughing on soil structure improvement and maize yield formation in the black soil region,this study was based on a field experiment conducted from 2021 to 2024.Three treatments were established:conventional tillage(CK,20 cm),deep ploughing at 30 cm(SS30),and deep ploughing at 40 cm(SS40).Soil physical properties,nutrient distribution,and maize yield dynamics were measured under different treat-ments.The results showed that deep ploughing significantly reduced the bulk density of the 0～40 cm soil layer,in-creased total porosity,and enhanced the content of available nutrients.In terms of yield,maize production under deep ploughing treatments increased by 8％～12％compared with conventional tillage,with the 40 cm treatment showing the most significant increase.In summary,as an important conservation tillage practice in the black soil region,deep ploug-hing not only optimizes soil structure but also achieves long-term stable improvements in maize yield,playing a crucial role in ensuring regional food security and promoting sustainable agricultural development.关键词
深松作业/黑土区/土壤结构/玉米产量/长期效应Key words
deep ploughing/black soil region/soil structure/corn yield/long-term effects分类
农业科技
