Soil-water characteristic curves of soil with plant additive and analyses of the fitting models

doi:10.6041/j.issn.1000-1298.2014.05.017

CORC > 兰州理工大学 > 兰州理工大学 > 新能源学院

	Soil-water characteristic curves of soil with plant additive and analyses of the fitting models
	Zheng, Jian 1,2; Wang, Yan 1; Cai, Huanjie 2; Wan, Jixiang 1; Li, Zhijun 2
刊名	Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
	2014-05-01
卷号	45 期号:5 页码:107-112
关键词	Additives Curve fitting Soil moisture Soil structure interactions Water conservation Fitting model Plant additives Soil bulk density Soil pores Soil water content Soil water holdings Soil-water characteristic curve Unsaturated hydraulic conductivity
ISSN号	10001298
DOI	10.6041/j.issn.1000-1298.2014.05.017
英文摘要	With the aim to explore the influence of plant additive on soil water-holding capacity, the soil-water characteristic curves under different soil bulk density, different plant additives and different additive proportions were measured, and the influences of plant additive on the soil water-holding capacity under the conditions mentioned above were analyzed. Then, the soil-water characteristic curves were fitted by using the models of RETC software, and the parameters of the models and the model suitability were determined. The results show that under the same soil water suction, the soil water contents of the treatments with plant additive are higher than that of pure soil; the treatment with 3% maize leaf plant additive has better water conservation capability than the treatment with 3% maize-cob, but the treatments with 1% plant additive have little difference. In the low suction stage, the mixing plant additive reduces the proportion of large pores in the soil; while at the higher suction stage, the plant additive increases the small pores proportion of soil, thereby improves the soil water-holding capacity. The analysis results of model suitability with models of RETC software show that the optimal model of unsaturated hydraulic conductivity is fitting Mualem model. The optimal models of the treatments with 1.35 g/cm3 and 1.40 g/cm3 soil bulk density are VGM(m, 1/n) and VGM(m, n), respectively, with 1% and 3% maize leaf additive, while those are BCM and GM(m, 1/n), respectively, with 1% and 3% maize-cob additive.
语种	中文
出版者	Chinese Society of Agricultural Machinery
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113323]
专题	新能源学院能源与动力工程学院
作者单位	1.Western China Energy and Environment Research Center, Lanzhou University of Technology, Lanzhou 730050, China; 2.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A and F University, Yangling, Shaanxi 712100, China
推荐引用方式 GB/T 7714	Zheng, Jian,Wang, Yan,Cai, Huanjie,et al. Soil-water characteristic curves of soil with plant additive and analyses of the fitting models[J]. Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,2014,45(5):107-112.
APA	Zheng, Jian,Wang, Yan,Cai, Huanjie,Wan, Jixiang,&Li, Zhijun.(2014).Soil-water characteristic curves of soil with plant additive and analyses of the fitting models.Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,45(5),107-112.
MLA	Zheng, Jian,et al."Soil-water characteristic curves of soil with plant additive and analyses of the fitting models".Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery 45.5(2014):107-112.