Study on the practice and effect of alleviating apple orchard soil compaction in the Weibei plateau

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Wei, Binmeng^1,2,3 ; Li, Zhonghui^4 ; Wang, Yiquan^1,2,3

Institute of Land Engineering Technology, Shaanxi Provincial Land Engineering Construction Group Co. Ltd., Xi'an, China^1

Shaanxi Provincial Land Engineering Construction Group Co. Ltd., Xi'an, China^2

Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources, Xi'an, China^3

College of Resources and Environment, Northwest AandF University, Yangling, China^4

关键词: Addition of lime;    Backfill material;    Chemical fertilizers;    Effect on soils;    Soil compaction;    Soil water content;    Storage capacity;    Water permeability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022018/pdf
DOI  :  10.1088/1755-1315/170/2/022018

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Long-term planting and the application of chemical fertilizer merely have led to soil compaction in the Weibei plateau, which was not conducive to soil water infiltration and air exchange. The aim of this study was to develop knowledge of drilling and backfill materials effect on soil water content and CO2 emissions. Five treatments consisted of control (no drilling) and drilling with vermiculite, slag, lime and backfill soil buried respectively. During the experiment, soil water content and CO2 emissions were determined for each treatment. The results showed that drilling improved the water permeability of the soil without damaging the root system of fruit trees, and promoted the release of soil CO2. The addition of vermiculite and slag had the best effect on soil water content improvement in the apple orchards. Additionally, soil CO2 emission was closely related to soil water content. Both too high and too low soil water content can limit soil CO2 release. The addition of lime can not only absorb the CO2 in soil inside, but also increase soil calcium storage capacity. Therefore, drilling with lime backfilled may be the optimal practice to alleviate soil compaction in apple orchards in the Weibei plateau.