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福建农林大学作物科学学院农业生态学课件 The Soils Around Us:Natural and Managed Soils
福建农林大学作物科学学院 农业生态学 课件 The Soils Around Us:Natural and Managed Soils
2015/9/23
福建农林大学作物科学学院农业生态学课件 The Soils Around Us:Natural and Managed Soils。
Short-term influence of anaerobically-digested and conventional swine manure, and N fertilizer on organic C and N, and available nutrients in two contrasting soils
Anaerobic Digestion Available N P, K and S Organic C and N Soil Swine Manure
2013/3/4
A three-year (2006-2008) field experiment was conducted at Swift Current and Star City in Saskatchewan to determine the short-term in-fluence of land-applied anaerobically digested swine manure (ADSM)...
Variability in Selected Soil Physico-chemical Properties of Five Soils Formed on Different Parent Materials in Southeastern Nigeria
Variability physico-chemical properties soils parent materials Southeastern Nigeria
2010/11/15
Different soil individuals require different land use and management practices for optimum
performance and yield. This is only possible if there is adequate information on the physico-chemical proper...
CHARACTERISTICS OF HUMIC ACIDS ISOLATED FROM SOILS UNDER VARIOUS FARMING SYSTEMS
ecological farming integrated farming humus
2009/3/30
Farming systems strongly affect soil humus. In this study some humus characteristics were used to compare the humus quantity and quality under two different farming systems. The field experiment was e...
Spatial characteristics of potentially useful retention in Polish arable soils
Polish arable soils potentially useful retention
2008/12/2
The spatial characteristics of potentially useful retention (PUR) in Polish arable soils have been presented. It was found that the values ranged from 2.1 to 27.2% vol. in relation to soil units. The ...
Spatial characteristics of water conductivity in the surface level of Polish arable soils
water conductivity Polish arable soils
2008/12/2
The research presents spatial characteristics of water conductivity in the arable layer of Polish soils. It was found that the lowest water conductivity is 0.00087 cm day? and the highest ?5900 cm day...
Crack tortuosity in swelling clay soils
swelling soil crack network crack connectedness planar tortuosity spatial tortuosity
2008/11/26
A relationship between the planar and spatial tortuosities of a statistically isotropic crack network in a clay soil is derived from the fact that connected cracks outline peds and are their boundarie...
Crack width, cross-section area, and volume in swelling clay soils
geometry swelling soils shrinkage cracks
2008/11/26
A model is presented for prediction of crack network geometry in clay soils. The starting point is the similarity between a crack network in rocks and that in soils, and, hence, principles of multiple...
Aggregate water stability of sandy and clayey loam soils differently compacted with and without wheat plants
soils texture roots compaction aggregation
2008/11/26
The objectives of our studies were to: 1) estimate the effects of compaction of sandy loam and clayey loam soils on growth parameters of winter wheat plants, 2) evaluate the resilien- ce capacity of t...
Aeration status of some slovakian soils
agrophysics soil aeration status D/Do air permeability Eh ODR dehydrogenase activity
2008/11/26
Aeration related properties of individual soil layers of three Slovakian soil profiles (Calcaro-haplic Phaeozem, Fluvi-calcaric Phaeozem and Calcaro-gleyic Phaeozem) were characterised with the use of...
Assessment of the conditions for the formation of organic-mineral complexes in soils on the basis of surface properties
mineral-organic complexes humus acids specific surface area molar energy of adsorption
2008/11/26
In this study the author made an attempt at the determination of the character of the surface of humus acid and clay mineral complexes, with iron and calcium acting as bonding agents, taking into acou...
Attempt of water retention characteristcs estimation as pedotransfer function for organic soils
organic soils pedotransfer functions water retention
2008/11/26
This paper presents the results of statistical-physical modelling (pedotransfer function) relating soil water content at defined values of soil water potential to selected physical and chemical parame...
Changes in pore size distribution and aggregate stability of two soils under long term tillage systems
tillage systems bulk density pore size distribution aggregate stability
2008/11/26
Tillage-induced changes in pore-size distribution and aggregate stability of two soils were investigated for 7 con- secutive years from 1994 to 2000. The three tillage treatments were used: convention...
Changes in soil organic matter, bulk density and tensile strength of aggregatesafter percolation in soils after conservation and conventional tillage
percolation process carbon distribution aggregates strength
2008/11/26
The type of tillage in arable soils affects porosity of the soil and in consequence the hydraulic conductivity. The accessibility and mobility of organic carbon in arable soils can differ depending on...
Spatial characteristic of hydro-physical properties in arable mineral soils in Poland as illustrated by field water capacity (FWC)
field water capacity Polish soils
2008/11/26
The spatial characteristics of the field water capacity (FWC) of Polish soils have been presented. It was found that their values range from 3.9 to 45.5 %, vol. in relation to soil units and are mostl...