土壤科学 Pub Date : 2023-01-01 DOI: 10.12677/hjss.2023.114023

盼盼张

{"title":"Effects of Soil Texture and Bulk Density on Soil Water Infiltration in Bare Rock Gravel Land","authors":"盼盼张","doi":"10.12677/hjss.2023.114023","DOIUrl":"https://doi.org/10.12677/hjss.2023.114023","url":null,"abstract":"In order to explore the influence of different bulk density on soil water infiltration process after soil cover treatment in gravel area, this study selected two different texture types of soil, Lou soil and yellow-brown soil, through indoor soil column infiltration test, compared and analyzed the water infiltration process of gravel soil under different bulk density conditions of these two soils, and provided theoretical basis for soil cover treatment in such areas. The results showed that bulk density had a great influence on the infiltration process of the experimental soil in the two germplasm plots, and the infiltration capacity of the experimental soil decreased with the increase of soil bulk density. The stable infiltration rate of the two soils was negatively correlated with the bulk density (R 2 > 95%), and the effect of bulk density on the stable infiltration rate of Lou soil was greater than that of yellow-brown soil. At the same time, the larger the bulk density, the smaller the cumulative infiltration. There was a significant linear negative correlation between the cumulative infiltration and the bulk density of the two soils within 100 min. Compared with the Philip equation, the Kostiakov infiltration model can better reflect the whole infiltration process of Lou soil and the infiltration of yellow-brown soil in the first 40 min. The infiltration process of yel-low-brown soil after 40 min can be well described by linear equation. In the process of soil water redistribution, the greater the soil bulk density in the same soil layer height, the smaller the water content, and the soil water content increases with the increase of soil depth. The result of soil water redistribution is that the greater the bulk density, the greater the water storage of 0~30 cm soil.","PeriodicalId":69352,"journal":{"name":"土壤科学","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136306286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics of Spatial and Temporal Changes of Soil Erosion in Longchuan River Basin, Chuxiong City 楚雄市龙川河流域土壤侵蚀时空变化特征

土壤科学 Pub Date : 2023-01-01 DOI: 10.12677/hjss.2023.114026

永涛许

引用次数: 0

Effects of Different Improved Materials on Soil Structural Characteristics under Different Unit Weight Gradients 不同改良材料对不同单位重量梯度下土壤结构特性的影响

土壤科学 Pub Date : 2023-01-01 DOI: 10.12677/hjss.2023.114025

静张

{"title":"Effects of Different Improved Materials on Soil Structural Characteristics under Different Unit Weight Gradients","authors":"静张","doi":"10.12677/hjss.2023.114025","DOIUrl":"https://doi.org/10.12677/hjss.2023.114025","url":null,"abstract":"In view of the ecological and environmental problems, such as excessive soil compactness, thickening of the bottom layer of the plough and upward shift, reduction of the number of soil aggregates, and deterioration of structural stability in Guanzhong area, combined with field monitoring and indoor simulation experiments, the improvement of soil structure by the addition of plant ash, organic fertilizer and biochar at different bulk density levels of 1.0, 1.1, 1.2, 1.3, 1.4 and 1.5 was analyzed. With the gradual increase of bulk density, soil compactness and compaction density show an increasing trend, and soil porosity shows a decreasing trend. The soil water content becomes a downward trend when the soil bulk density is 1.1, and an upward trend when the soil bulk density is 1.4. When the soil bulk density is 1.2 and 1.3, the plant height of crops is higher. Under different gradients of unit weight, plant ash has the greatest impact on plant height of crops, biochar has the greatest impact on soil compaction density and water content, and organic fertilizer has the greatest impact on soil porosity. In the process of soil compaction in Guanzhong area, if the water supply is sufficient in this area, the soil environment with plant ash is more favorable for plant growth and development. If water is the main limiting factor, adding biochar is the best measure to improve soil structure.","PeriodicalId":69352,"journal":{"name":"土壤科学","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135212618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Biochar Produced from Chili Straw on Physicochemical Properties of Phosphogypsum and Switchgrass Growth 辣椒秸秆生物炭对磷石膏理化性质及柳枝稷生长的影响

土壤科学 Pub Date : 2023-01-01 DOI: 10.12677/hjss.2023.114024

秀月徐

引用次数: 0

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