Impact of Hydrochar Amendment on the Water Retention Capability of Agricultural Soil
Impact of Hydrochar Amendment on the Water Retention Capability of Agricultural Soil
复制标题
水炭改良对农业土壤保水能力的影响
DOI：
10.1061/9780784484258.015
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Liu, Lubo
中科院分区：
文献类型：
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作者：
Han, Tianyu;Li, Jiangjun;Liu, Lubo
土壤的保水能力对植物的生长有重要影响。农业土壤缺水可能导致作物生产力低下，可能导致人口不断增加的干旱地区（如加州中部）出现严重的粮食短缺问题。因此，迫切需要采取新的方法来提高土壤的保水能力，使农民能够更有效地利用水。研究表明，由水热碳化（HTC）产生的水热炭可以通过使其保持更长时间的水分来改善土壤质量。因此，本研究探讨了添加水热炭如何影响根区的持水能力，通过土壤实验。对于实验，柱填充有样品桑迪土壤但没有水热炭，其用作对照。同时，将8%的水热炭与土柱顶部的土壤混合，研究了水热炭的存在与否对土壤含水量随深度的时间变化、不同时间的水势水头随深度的时间变化以及土壤含水量随水势水头的分布的影响。这些试验结果可以用来说明添加一定量水热炭的土壤改良剂所取得的农业效益。
The water retention capability of soil significantly impacts plant growth. A scarcity of water in agricultural soil may cause low crop productivity, potentially leading to critical food-deficit problems in arid areas with increasing populations such as central California. New ways to enhance the water retention capability of soil to enable farmers to utilize water more effectively are thus urgently needed. Research has shown that hydrochar, which is produced by hydrothermal carbonization (HTC), can potentially improve soil quality by enabling it to hold water for longer periods. This study therefore explored how the addition of hydrochar affects water retention capacity in the root zone using soil experiments. For the experiments, a column filled with sample sandy soil but without hydrochar, which was used as a control. Meanwhile, 8% weight of hydrochar were mixed with soil at the top of soil columns to investigate how the presence or absence of hydrochar affected: (1) the temporal variation of soil moisture vs depth; (2) the temporal variation in the water’s potential head vs. depth at different times; and (3) the distribution of soil moisture vs the water’s potential head. The results of these experiments can be utilized to show the agricultural benefit gained by soil amendment with a certain amount of hydrochar.
用于监测红土土壤地下土壤水分运动的电容式土壤湿度传感器的实验室校准
DOI：
10.9734/ijpss/2021/v33i1730558
发表时间：
2021
期刊：
International Journal of Plant & Soil Science
影响因子：
--
作者：
J. Narayanan;K. K. Sathian
通讯作者：
K. K. Sathian