Effects of long-term various organic materials incorporation on characteristics of soil quality and crop yield

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Liu, Zhe^1,2

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

710075, China^1

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

710075, China^2

关键词: Aggregate stability indices;    Fractal dimensions (d);    Geometric mean diameters;    Mean weight diameter;    North China Plain;    Nutrient contents;    Soil organic carbon;    Structural stabilities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022086/pdf
DOI  :  10.1088/1755-1315/170/2/022086

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to study the effects of different organic materials on soil quality and crop yield, a seven -year, s field experiment was conducted in North China Plain. The experiment included six treatments: no organic materials (CK), compost (C), Cow Dung (PM), biogas residue (BgR), crop straw (Str), biochar (BC), all samples were separated into four aggregate-size classes by wet sieving, meanwhile we calculated the mean weight diameter (MWD), geometric mean diameter (GMD), fractal dimension (D) and unstable aggregate index (ELT ) of water-table aggregates. Compared with the CK treatment, the application of organic materials in 0∼15 cm soil layer not only significantly increased MWD, GMD) of water-table aggregates (PLT of water-table aggregates. Also, the content of soil organic carbon (SOC) and total nitrogen (TN) increased significantly under different organic materials treatments (P