搜索结果: 136-150 共查到“知识库 土壤学 Soil”相关记录472条 . 查询时间(0.203 秒)
Periodic variation in soil, forage and serum minerals of dry cattle in Punjab, Pakistan
Soil Forage Serum Ruminants Productivity Punjab Pakistan
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2013/2/28
An investigation was conducted to evaluate the nutrient level of grazing livestock as influenced by the sampling periods in Punjab state districtSargodha,Pakistan. Twenty composite soil and pasture an...
Ameliorate salinity effect through sulphur application and its effect on some soil and plant characters under different water quantities
Calcareous Soil Faba Bean Sulphur Soil Properties Yield Characters Fayoum
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2013/2/27
The main objective of this work is to study the effect of sulphur application and irrigation water quantity on some soil properties of the calcareous soils and to limit the suitable concentration to o...
Assessment cultivated period and farm yard manure addition on some soil properties, nutrient content and wheat yield under sprinkler irrigation system
Sandy Soil Hydrophysical Chemical Properties
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2013/2/27
This study examined changes in some soil hydrophysical, chemical properties and wheat yield (grain; straw yield, N, P, K, Protein and carbohydrates contents) as trends under two cultivated period 10 a...
Approximation of some minerals in soil and forage as a function of non-conventional compost: A case study
Mineral Forage Soil Non-Conventional Fertilizer
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2013/2/27
In present study concentration of some metals (Magnesium, Nickel and Calcium) were determined in soil and different parts of Avena sativa treated with poultry waste grown in the pots. Nine different t...
Effect of electric pulse charged to culture soil on improvement of nutritional soil condition and growth of lettuce (Lactuca sative L.)
Electrically Pulsed Soil Lettuce Inorganic Nutrients Minerals Weathering
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2013/3/4
This study is intended to measure variations of nutritional soil condition and mass spectrometric patterns to describe the specific effects of electric pulse charged to culture soil which induced an i...
Effects of broad-leaf crop frequency in various rotations on soil organic C and N, and inorganic N in a Dark Brown soil
Broad-Leaf Crops Canola Frequency Light Fraction Organic C
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2013/3/4
The objective of this study was to determine the impact of frequency of broad-leaf crops canola and pea in various crop rotations on pH, total organic C (TOC), total organic N (TON), light fraction or...
RETRIEVING SURFACE SOIL MOISTURE FROM MODIS AND AMSR-E DATA: A CASE STUDY IN TAIWAN
MODIS data Surface soil moisture Taiwan
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2014/4/28
Soil moisture is a key factor that controls the exchange of water between land surface evaporation and plant transpiration. Information on surface soil moisture variations in both time and spatial dom...
Effects of a low-voltage electric pulse charged to culture soil on plant growth and variations of the bacterial community
Electrically Pulsed Soil TGGE Lettuce Hot Pepper Plant Bacterial Community
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2013/2/28
This study was conducted to verify the effect of an electric pulse on growth of crops (lettuce and hot pepper) that were cultivated in lab-scale soil. The electric pulse generated from direct-circuite...
Resilience, reliability and risk analyses of maize, sorghum and sunflower in rain-fed systems using a soil moisture modeling approach
Resilience Reliability Risk Analysis: Agricultural Drought Index
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2013/2/27
This paper is aimed at examining the applicability of methods for resilience, reliability and risk analyses of rain-fed agricultural systems from modeled continuous soil moisture availability in rain-...
Metagenomic profiles of soil microbiota under two different cropping systems detected by STRs-based PCR
Cover Plants Hot-Spot Variability Mini- and Micro-satellite
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2013/2/27
In this research, soil microbial structures under a wheat triennial monoculture and horse bean-wheat-horse bean succession were evidenced using a metagenomic approach. Polymorphism analysis of DNA ext...
Comparative evaluation of modified neem leaf, neem leaf and woodash extracts on soil fertility improvement, growth and yields of maize (Zea mays L.) and watermelon (Citrullus lanatus) (Sole and Intercrop)
Modified Neem Leaf Neem Leaf Wood Ash Extracts
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2013/2/27
Two field experiments were carried out at Akure (7oN, 5o101E) in the rainforest zone of Nigeria in 2006 and 2007 to determine the effectiveness of neem leaf, woodash and modified neem leaf extracts as...
Evolution and significance of soil magnetism of basalt-derived chronosequence soils in tropical southern China
Magnetic Parameters Basalt-Derived Chronosequence Soil
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2013/3/5
Soil samples were collected from eight basalt- derived chronosequence soils with the ages of 0.01, 0.58, 0.92, 1.33, 2.04, 3.04, 3.76 and 6.12 Ma respectively from Leizhou Peninsula and northern Haina...
Effects of soil moisture and length of irrigation on soil wetting to deliver fumigants through microirrigation lines in sandy spodosols
Methyl Bromide Drip Irrigation Soilborne Pests Water Management
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2013/3/5
Soil fumigant delivery through microirrigation (drip) lines has the potential to replace direct soil injection into planting beds. However, wetting coverage in these Spodosols must be improved to incr...
Long-term effects of management systems on crop yield and soil physical properties of semi-arid tropics of Vertisols
Broadbed and Furrow System Minimum Tillage Long-Term Experiment Sustainability
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2013/3/5
Long-term experiments can be used to assess management induced changes in soil properties and sustainability of the management system in terms of the productivity. Such data are scanty, especially in ...
Spatial and temporal variability of soil freeze-thaw cycling across Southern Alberta, Canada
Freeze-Thaw Soil Temperature Agro-Ecosystem Modeling Regional Climate Soil Science
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2013/3/5
Soil freeze-thaw cycles play an important role in all aspects of agro-ecosystems, such as crop productivity, the evolution of the soil matrix, including trace-gas emissions. In regions that experience...