搜索结果: 1-15 共查到“知识库 土壤学 mineral”相关记录19条 . 查询时间(0.102 秒)
Effect of agricultural lands afforestation and tree species composition on the soil reaction, total organic carbon and nitrogen content in the uppermost mineral soil profile
acidification afforestation carbon nitrogen soil reaction
2015/3/10
Forests occupy one third of the world’s land area and govern carbon (C) transfers and influence nitrogen (N) content in the biosphere. Afforestation leads to soil changes of specific dynamics, often a...
The Changes of Soil Mineral Nitrogen Observed on Farms between Autumn and Spring and Modelled with a Simple Leaching Equation
Soil Mineral Nitrogen Observed Farm
2015/3/1
The content of nitrate or mineral nitrogen (Nmin = N-NO3
–
+ N-NH4
+
) in soil in autumn is recognized as
the indicator of potential risk of N leaching during winter
The influence of long-term organic and mineral fertilization on soil organic matter
long-term field experiment organic and mineral fertilization crop rotation soil organic matter
2015/2/4
Parameters evaluating soil organic matter quantity (organic C and N content) and quality (hot water extractable C content, aliphatic compounds, microbial biomass C content, basal respiration activity)...
Wetting angle and water sorptivity in mineral soils
sub-critical repellency Washburn theory wavy capillary
2015/2/3
Two simple models of a non-cylindrical (wavy) capillary have been applied to show the impact of pore shape and of wetting angle on water sorptivity in soils. Wetting angle derived from the Washburn ap...
Integrated Effect of Mineral, Compost and Biofertilizers on Soil Fertility and Tested Crops Productivity
Biofertilizer organic manure calcareous soil maize wheat and plant nutrients
2010/11/15
Poor performance of nitrogen and micronutrients availability is one of the major factors related to crop productivity in the calcareous soil. Maize (Individual hybrid 10) and wheat (C.V. Giza 168) cro...
Soil Mineral N Dynamics in a Maize Crop Following Different Soil Fertility Amendments in Different Soil Fertility Status in Sub-humid and Semi-arid Regions in Central Kenya
N uptake Organic inputs Nitrate ammonium
2010/11/15
Nitrogen is the major limiting nutrient in crop production and it is also one of the nutrients that is easily lost from the plant-soil system in various ways. Due to this, N supply, N management and N...
Effect of Nitrogen Fertilizer Application Rates on Tree Growth,Fruit Quality and Leaf Mineral Content of Young Citrus‘Shiranuhi’trees
effect of fertilizer application nitrogen fertilizer
2009/7/7
A study was carried out to determine the most effective nitrogen fertilizer application rate for optimal tree growth, fruit quality, and leaf mineral content of the young citrus ‘Shiranuhi’ [‘Kiyomi’ ...
Effect of organic and mineral fertilizers and land management on soil enzyme activities
urease saccharase fertilizer farming system
2010/1/19
Sustainable and rational management of agrophytocenoses depends on various bio-
indices and methods of application, particularly the development and protection of soil
resources (Lai et al., 200...
The variation of mobile humic acids and mineral nitrogen in the soil as affected by the use of perennial grasses for green manure
perennial grasses mobile humic acids mineral nitrogen Cambisol
2010/1/19
The paper presents the findings of the experiments conducted on a clay loam gleyic
Cambisol mical Research in 20072008. The tests were designed to establish the effects of the use of perennial grass...
EFFECT OF MINERAL FERTILIZATION ON YIELD OF MAIZE CULTIVARS DIFFERING IN MATURITY SCALE
grain yield magnesium maize cultivars potassium sodium yield components zinc
2009/4/1
Field experiments were conducted in 2005-2007 at the Brody Experimental Station (52°26’ N; 16°17’ E) of the University of Life Sciences in Poznań with the following factors: 1) cultivars with differe...
An assessment of the use of mineral and organic fertilizers by smallholder farmers in Vhembe district, Limpopo province, South Africa
Mineral fertilizers organic fertilizers smallholder farmers
2009/3/4
The use of mineral and organic fertilizers as straight fertilizers or in appropriate combinations may alleviate the problem of declining soil fertility and hence lead to increased crop yields. T...
Use of pruning and mineral fertilizer affects soil phosphorus availability and fractionation in a gliricidia/maize intercropping system
Agroforestry fertilizer trees available P P-uptake
2009/3/4
Leguminous tree species are known to replenish soil nutrients through biological N fixation, mulch effect and recycling of other nutrients from the deeper soil layer to the topsoil, when managed in ...
Minimizing the quantity of mineral nitrogen fertilizers on grapevine by using humic acid, organic and biofertilizers
Thompson seedless grapevine fertilization mineral organic biofertilizer humic acid
2010/11/11
The aim of this study is to evaluate the minimizing of mineral nitrogen fertilization through
using humic acid (HA) and organic source [composted municipal solid waste (MSW)] with or without bioferti...
Effect of Potassium Rates on Barley Growth and its Mineral Content under Different Salt Affected Soil Conditions
Saline Sodic Saline sodic soil potassium rates barley growth parameters mineral content
2010/11/9
Ca and Mg uptake by starw and grains of barley plants grown on all the used soils, showed the same trend as affected by K rates under different soils. The highest levels of both
Ca and Mg uptake by s...
The Integrated Fertilization of Thompson Seedless Grapevines with Organic, Biofertilizers Manures and Low Dose of Mineral Nitrogen
Nitrogen Fertilization Organic manures Biofertilizers Yield Quality Nitrate Nitrite and Grapes
2010/11/9
This investigation was planed to study the effect of minimizing the use of nitrogen fertilization in vineyards as 100% mineral N fertilization to only 50% mineral N and 50% organic i.e., (composted mu...