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[1]LIU Lu,ZHANG Qingwen,PAN Yinghua,et al.Effects of Soil Amendments on Hydraulic Conductivity of Salinized Chao Soil[J].Research of Soil and Water Conservation,2019,26(03):66-71.

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Effects of Soil Amendments on Hydraulic Conductivity of Salinized Chao Soil

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 66-71 Column: Public date: 2019-04-12

Title:: Effects of Soil Amendments on Hydraulic Conductivity of Salinized Chao Soil

Author(s):: LIU Lu¹, ZHANG Qingwen², PAN Yinghua¹, LUO Weirong¹, YANG Yongqin¹; 1. School of Resources and Environmental Engineering, Ludong University, Yantai, Shandong 264000, China;
2. Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, Beijing 100086, China

Keywords:: salinized chao soil; saturated hydraulic conductivity; polyacrylamide; bamboo charcoal organic compound fertilizer; bacteria organic compound fertilizer

CLC:: S152

DOI:: -

Abstract:: Soil Hydraulic conductivity is an important characteristic which affects soil water infiltration, leaching process and so on. And saturated hydraulic conductivity is the one of soil water parameters which influences soil infiltration capacity, surface runoff, salt leaching. In this paper, with the indoor soil column experiments and salinized chao soil, the effects of different soil amendments such as polyacrylamide (PAM), bamboo charcoal soil conditioner (BC) and bacterial organic compound fertilizer (BO) on soil water conductivity was investigated. The results show that:(1) the saturated hydraulic conductivity of salinized chao soil increases with the increase of BC dosage; when BC dosage is 20 g/kg, the saturated hydraulic conductivity of salinized chao soil is 0.041 cm/min, which is 32.3% higher than CK; the saturated hydraulic conductivity of soil decreases with the increase of PAM dosage; The PAM application rate is 1 g/kg, soil saturated hydraulic conductivity is 0.012 7 cm/min, which is 59.0% lower than CK; the BO treatment selected in this paper is saturated with soil, the effect of water rate is small, and there is no significant difference between the amounts; (2) compared with CK, the permeation time required for each treatment of BC and BO is shorter, and the cumulative outflow at 7 hours is larger; the permeation time required for each treatment of PAM is longer, and the cumulative outflow at 7 hours is smaller. Different amendments have different effects on the water conductivity of salinized chao soil. This study can provide data support for the selection and dosage of soil modifiers.

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