中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 盐土改良中砂柱的作用机理研究 农业机械学报 2013,44 (6) 122-127，214
Position: Home > Articles > Mechanism of Sand Column in Improving Coastal Saline Soil Transactions of the Chinese Society for Agricultural Machinery 2013,44 (6) 122-127，214

盐土改良中砂柱的作用机理研究

作  者：
张博;马晨;马履一;贾黎明;贾忠奎;刘洪庆
单  位：
天津海林园艺环保科技工程有限公司;北京林业大学省部共建森林培育与保护教育部重点实验室
关键词：
滨海盐土;砂柱;含盐量;脱盐均匀度;水分下渗速率;pH值
摘  要：
采用室内土柱模拟试验结合田间试验的方法对砂柱在盐土改良中的作用机理及应用效果进行了初步研究。结果表明:在土柱模拟试验中,设置砂柱的土柱3次淋水水分平均下渗速率达到0.132 mm/min,是未设置砂柱的1.73倍;含盐量由3.78%降低至0.51%,淋盐效率是未设置砂柱的1.45倍;其淋水后pH值较未设置砂柱的降低了0.12,田间试验区淋水后表现出和土柱试验相似的规律。同时,随着砂柱密度的增加,土壤脱盐率、脱盐均匀度提高,抑制pH值升高效果增加,砂柱间距0.67 m的田间试验区土壤脱盐率达到83.9%,垂直方向均匀度差值为3.9%,而未设置砂柱的脱盐率仅为53.2%,均匀度差值达到33.1%,前者pH值相对后者降低了0.59。在一定范围内,盐土含盐量、pH值及水分下渗速率显著线性相关,随着淋水速率加快、pH值升高,盐土含盐量降低。综合考虑各方面效果砂柱处理以间距0.67 m为最佳。
译  名：
Mechanism of Sand Column in Improving Coastal Saline Soil
作  者：
Zhang Bo1 Ma Chen1 Ma Lüyi1 Jia Liming1 Jia Zhongkui1 Liu Hongqing2(1.Key Laboratory of Silviculture and Conservation,Ministry of Education,Beijing Forestry University,Beijing 100083,China 2.Hailin Tianjin Horticulture Environmental Science and Technology Engineering Co.,Ltd.,Tianjin 300457,China)
关键词：
Coastal saline soil Sand column Salt content Desalinate evenness Water infiltration rate pH value
摘  要：
To explore the role of sand column in improving the saline soil,a series of experiments combining soil column simulation and field monitoring were carried out.The results indicated that the average water infiltration rate of the soil column reached to 0.132 mm/min in three washing repeats with the help of sand columns,which was 1.73 times higher than that of the soil column without sand columns.And the salinity decreased from 3.78% to 0.51% with sand columns,which was 1.45 times higher than that of the soil column without sand columns.Moreover,the former's pH value decreased by 0.12 compared with the latter's after washing.Similar results could be found in the field contrast experiments.The increase in density of the sand column could enhance the desalination rate and the evenness of salt washing,and also inhibit the growing of pH value.The desalination rate reached to 83.9% and the vertical evenness difference was 3.9% with sand columns at an interval of 0.67 m in field contrast experiments.But without sand columns,the desalinating rate was just 53.2% and the vertical evenness difference stood at 33.1%.The pH value decreased by 0.59 with the sand columns.To a certain degree,there was a correlation among the salt content,pH value and the water infiltration rate.The salinity went down with the increase of pH value and water infiltration rate.With all factors taken into consideration,the 0.67 m interval of sand column was the best.

相似文章

导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46