Analysis of mixing liquid amendments by rotary tillage using discrete element modelling and digital image processing

文献类型： 外文期刊

第一作者： Wu, Zhengyang

作者： Wu, Zhengyang;Li, Hongwen;He, Jin;Lu, Caiyun;Wang, Chao;Jiang, Shan;Li, Rongrong;Yang, Zongfu;Wu, Zhengyang;Li, Hongwen;Zhang, Xu;Shan, Hongdao;Zhang, Dejian;Duan, Sitong

作者机构：

关键词： Liquid particles; Amendment infiltration test; Tracer for dye; Soil vertical profile; Wet mixing

期刊名称：COMPUTERS AND ELECTRONICS IN AGRICULTURE （ 影响因子：8.9； 五年影响因子：9.3 ）

ISSN： 0168-1699

年卷期： 2025 年 237 卷

页码：

收录情况： SCI

摘要： The application of organic amendments is considered a green and sustainable method to make up for the loss of organic matter in cultivated soils, where the soil heterogeneity due to the uneven spatial distribution of organic amendments in the soil should not be ignored. This study used brilliant blue stains to trace the liquid amendments in the application of liquid amendments (ALA). A total of 22 digital images of vertical profiles were used to quantify the distribution of amendments for the experiment. Simulations replicated the ALA by the discrete element method (DEM), where 22 sliced subspaces of the same size as the experimental condition were used to quantify the distribution of the simulated amendments. Each sliced subspace was further divided into 100 minimal subspaces, and it was calculated by an amendment mixing index (AMI) which was a normalized index given a sign. The results showed that the simulation accurately reproduces the AMIs in the sliced subspaces with an average relative error of 1.25 % to 23.79 %. The AMI assigned to the symbol reflects the mixing of liquid amendments in the minimal subspace. An approach based on digital image processing and an approach based on DEM simulation that could be used to analyze the mixing of liquid amendments quantitatively has been developed. They can visually characterize the mixing of liquid amendments.

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