Impact of Bi ̊Char on Water Characteristics of a Chinese Severe Saline Agricultural Soil

Abstract:

Bi ̊Char soil amendment has been accepted as a low-risk soil carbon sequestration method. Some other agricultural benefits also reported in previous researches. Two kinds of bi ̊Chars, produced from walnut shell and soft wood, with significantly different surface characteristics and a severe saline sandy loam soil was used in our research. Physical and chemical parameters of bi ̊Char and soil were analyzed. The results pressure plate analysis indicated that high surface area bi ̊Char can increase water retention and plant available water in severe saline agriculture soil, however, such effect wasn’t observed in all the low surface area bi ̊Char treatments. Based on these results, a simulated soil water loss experiment was conducted under 3 different temperatures (from 25 ^̊C to 40 ^̊C), with 4 bi ̊Char doses for 120 h. Our results shown that high dose of high surface area bi ̊Char can reduce the rate of soil water loss under high temperature. Such effect indicated that high surface area bi ̊Cahr can help soil hold more water under lab condition and simulated field condition. In bi ̊Char soil application, the interaction between bi ̊Char, soil and climate condition needs to be considered carefully to acheive optimum solution for both environmental and agricultural purposes.

• Periodical: Applied Mechanics and Materials (Volume 737)
• Pages: 754-757
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.737.754
• Online since: March 2015
• Authors: Dao Yuan Wang*, Xin Shan Song, Deng Hua Yan, Xue Hua Liu, Yuan Wang, Hao Wang
• Keywords: Bi ̊Char, Saline Agricultural Soil, Soil Water Characteristic

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