logging in or signing up OS0607 YWANG what is good soil Silvestre Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 530 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: January 22, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Clay, loess & loam - what is good soil ? : Clay, loess & loam - what is good soil ? Yana Wang 17.01.2007Soil: SoilSoil Science Society of America (SSSA): Soil Science Society of America (SSSA) Soil is the unconsolidated mineral material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants. composition of soil by volume: composition of soil by volume Ideal fertile soil Mineral 45% Organic matter 5% Water 25% Air 25% http://jpkc.snnu.edu.cn/geog/webasp/kj/kejian/6%20turangquan.pptsoil particle: soil particle Rock and mineral weathering Parent material Soil formation Soil particle physical chemical biological Primary particle Secondary particleclassification systems of soil : classification systems of soil Criterion: equivalent diameter or effective diameter of soil particle Soil texture: gravel >2 mm sand 0.05~2 mm silt 0.002~0.05 mm clay < 0.002 mmSlide8: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptsoil particle: soil particle The larger the particles are, the more SiO2 the soil has, the more barren it is. http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptSlide10: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptSlide11: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptClay: Clay Mineral: Al2[(OH)4Si2O5] · nH2O Al2O3 · 2SiO2 · 2H2O etc. poor aeration and drainage plastic when wet, when dry become firm Slide15: Clay is only good for paddy rice field.loess: loess Mineral: most carbonates small amount of clay minerals good aeration, water-holding ability easy to be transported by river and wind for example: 1935 dust storm in midwest United States loam: loam mixture of clay, silt and sand sandy, plastic when wet easily water contain more nutrients than sandy soils ideal fertile soil other parameters: other parameters organic matter pH value etc.organic matter: organic matter microorganism soil animal organic manure http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/3.1.pptorganic matter: organic matter element: 90~95% C、O、H、N、 P、K、Ca、Mg、Fe、Si、 Zn、Cu、B、Mo、Mn etc. soil fertility:soil pH value: soil pH value climate: high temperature and humidity accelerates the weathering microorganism: for example: breath from bacterium environment: acid rainSlide24: The best pH value for plants is 6,5 . soil pH value http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide25: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide26: Fruit http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide27: Vegetables http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSummary: Summary Clay: perfect water-holding ability good for paddy rice field Both loess and loam can be tillable soil for most of plants. But loam is better, because of more nutrient. more than 1.5% organic matter pH value by 6.5Reference: Reference C.Y.Huang, Soil Science,1991 J. Bachmann, G. Arye, M. Deurer, S. K. Woche, R. Horton,Y. Chen, J. Plant Nutr. Soil Sci. 2006, 169, 745–753 http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/html/link.html http://soil.gsfc.nasa.gov/soilform/deposits.htm http://nhjy.hzau.edu.cn/kech/2006/turangxue/dzja.html http://en.wikipedia.org/wiki/Clay http://en.wikipedia.org/wiki/Loess http://en.wikipedia.org/wiki/LoamSlide30: Thank you for your attention! You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
OS0607 YWANG what is good soil Silvestre Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 530 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: January 22, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Clay, loess & loam - what is good soil ? : Clay, loess & loam - what is good soil ? Yana Wang 17.01.2007Soil: SoilSoil Science Society of America (SSSA): Soil Science Society of America (SSSA) Soil is the unconsolidated mineral material on the immediate surface of the Earth that serves as a natural medium for the growth of land plants. composition of soil by volume: composition of soil by volume Ideal fertile soil Mineral 45% Organic matter 5% Water 25% Air 25% http://jpkc.snnu.edu.cn/geog/webasp/kj/kejian/6%20turangquan.pptsoil particle: soil particle Rock and mineral weathering Parent material Soil formation Soil particle physical chemical biological Primary particle Secondary particleclassification systems of soil : classification systems of soil Criterion: equivalent diameter or effective diameter of soil particle Soil texture: gravel >2 mm sand 0.05~2 mm silt 0.002~0.05 mm clay < 0.002 mmSlide8: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptsoil particle: soil particle The larger the particles are, the more SiO2 the soil has, the more barren it is. http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptSlide10: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptSlide11: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/2.1.pptClay: Clay Mineral: Al2[(OH)4Si2O5] · nH2O Al2O3 · 2SiO2 · 2H2O etc. poor aeration and drainage plastic when wet, when dry become firm Slide15: Clay is only good for paddy rice field.loess: loess Mineral: most carbonates small amount of clay minerals good aeration, water-holding ability easy to be transported by river and wind for example: 1935 dust storm in midwest United States loam: loam mixture of clay, silt and sand sandy, plastic when wet easily water contain more nutrients than sandy soils ideal fertile soil other parameters: other parameters organic matter pH value etc.organic matter: organic matter microorganism soil animal organic manure http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/3.1.pptorganic matter: organic matter element: 90~95% C、O、H、N、 P、K、Ca、Mg、Fe、Si、 Zn、Cu、B、Mo、Mn etc. soil fertility:soil pH value: soil pH value climate: high temperature and humidity accelerates the weathering microorganism: for example: breath from bacterium environment: acid rainSlide24: The best pH value for plants is 6,5 . soil pH value http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide25: http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide26: Fruit http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSlide27: Vegetables http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/ppt/5.1.pptSummary: Summary Clay: perfect water-holding ability good for paddy rice field Both loess and loam can be tillable soil for most of plants. But loam is better, because of more nutrient. more than 1.5% organic matter pH value by 6.5Reference: Reference C.Y.Huang, Soil Science,1991 J. Bachmann, G. Arye, M. Deurer, S. K. Woche, R. Horton,Y. Chen, J. Plant Nutr. Soil Sci. 2006, 169, 745–753 http://netc.nwsuaf.edu.cn/jingpin/2003/turangxue/html/link.html http://soil.gsfc.nasa.gov/soilform/deposits.htm http://nhjy.hzau.edu.cn/kech/2006/turangxue/dzja.html http://en.wikipedia.org/wiki/Clay http://en.wikipedia.org/wiki/Loess http://en.wikipedia.org/wiki/LoamSlide30: Thank you for your attention!