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[1]XIE Zhiqiang,XU Jianlin,ZHU Zhaolong,et al.Application of Ultrasonic Energy for Assessing Aggregate Stability[J].Research of Soil and Water Conservation,2016,23(04):19-22.

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Application of Ultrasonic Energy for Assessing Aggregate Stability

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 19-22 Column: Public date: 2016-04-28

Title:: Application of Ultrasonic Energy for Assessing Aggregate Stability

Author(s):: XIE Zhiqiang¹, XU Jianlin¹, ZHU Zhaolong^1,2, AN Shaoshan²; 1. College of Mechanical and Electronic Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: soil aggregate; aggregate stability; ultrasonic energy; Yoder method

CLC:: S152.4

DOI:: -

Abstract:: Aggregate stability is an important index of soil quality, but hard to be quantified. Here an ultrasonic energy method was developed to quantify soil aggregate stability, and its practicability was tested by comparing with Yoder method in terms of mean weight diameter (MWD) and aggregate size distribution (ASD) of two groups of soils, 3 stable soils (Fluvo-aquic soil from Zhejiang Province, Yellow loam from Chongqing City, Red soil from Jiangxi) and 2 weak soils (Loam from Hebei Province, Dark brown soil from Shangdong Province). The results show that the stability indicated by MWD decreases in the order:Fluvo-aquic soil > Red soil > Yellow loam >> Dark Brown soil > Loam; the ultrasonic dispersion cam break soil aggregate efficiently due to its strong dispersing power, and thus this method prefers to strong soil than Yoder method, but this method seems not to be suitable to assess the aggregate stability of weak soil compared with Yoder method. Therefore, a proper method assessing soil aggregate stability can be chosen through the rule:ultrasonic energy method for stable soil, Yoder method for weak soil.

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