課程名稱︰土壤學 課程性質︰選修 課程教師︰李達源 開課學院：生農 開課系所︰農化系 考試日期（年月日）︰103/11/14 考試時限（分鐘）：10:20~12:10 (共110分鐘) 試題 : 1.Please describe the function of soil in the ecosystem.(5%) 2.What are major minerals in sand and silt fractions of soils?What are major minerals in clay fraction of soils?(5%) 3.Please give one example of 1:1, 2:1, 2:1:1 layer silicates respectively and explain the difference in structure and properties among those layer silicates.(10%) 4.Please illustrate the important function of soil microorganisms and the beneficial effects of Rhizobia and mycorrhizae on supplying nutrients to plant.(10%) 5.What are the important function od soil organic matter?What are important functional groups of soil humus?How do those functional groups effect the properties of soil humus?(10%) 6.How do you describe soil color?If the color of a soil is red, what soil characteristics do you expect?If the color of a soil is black, what soil characteristics do you expect?(5%) 7.What is soil structure?Why is aggregated soil structure suitable for crop growth?Why is soil crusting not suitable for crop growth?How do you promote the formation of aggregated soil structure?(10%) 8.Please calculate the porosity of a soil which has bulk density of 1.5 g/cm3 and particle density of 2.65 g/cm3.Also explain the difference between porosity and pore size distribution of soils.(10%) 9.Please explain the difference between "soil water content" and "soil water potential".In addition, give one apparatus (or method) for measuring "soil water content" and "soil water potential" respectively.(10%) 10.Please draw the typical soil moisture characteristic curves for a sandy and a clay soil respectively and indicate the "field capacity" and "wilting point" on the curve and illustrate the importance of these two point on soil water management.(10%) 11.Please define the following terms:(15%) (a)soil texture (b)isomorphous substitution (c)cation exchange capacity (d)soil saturated hydraulic conductivity (e)infiltration --

※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 140.112.80.115 ※ 文章網址: https://webptt.com/m.aspx?n=bbs/NTU-Exam/M.1422281374.A.016.html ※ 編輯: a09986 (140.112.80.115), 01/26/2015 22:12:30