搜索结果: 1-15 共查到“农学总论 FIELD”相关记录46条 . 查询时间(0.156 秒)
Microparticle composites on the basis of scrap utilizable in the field of agricultural production
epoxy resin hardness load wear
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2015/7/2
For renovation of functional surfaces of machines and devices for agricultural production it is possible to use, in addition
to conventionally used methods, polymers with fillers – composites. The p...
Field response of Colorado potato beetle to enantiomeric blends of CPB I aggregation pheromone
Leptinotarsa decemlineata Chemical Ecology Lures Traps Behavior
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2013/3/4
Colorado potato beetle, Leptinotarsa decemlineata, is attracted to (S)-3,7-dimethyl-2-oxo-oct-6-ene-1,3-diol [(S)-CPB I], a male-produced aggregation pheromone. Pitfall trap studies were conducted to ...
A Field Study in the Status and Threats of Cultivation in Kimana and Ilchalai Swamps in Amboseli Dispersal Area, Kenya
Amboseli Ecosystem Irrigated Agriculture Kenya Maasai Livelihoods Resource Conservation Swamps
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2013/3/8
The scarcity of water and dependence of local communities on wetlands for resources and services is a common occurrence in dry rangelands such as Amboseli in Kenya. There are only a few swamps outside...
Paddy field soil conservation: Indian historical practices
Stubble Cow Dung Paddy Multi-Crops Heavy Monsoon Rains Soil Conservation
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2013/3/4
India is an ancient land having high seasonal rain fall (4 months rain & 8 months dry), has paddy cultivation. Becauses silt-sand separation; buoyant sand gets carried; silt agglutinates. Rill fluid d...
Evaluation of wheat ear insects in large scale field in central Germany
Winter Wheat Thrips Wheat Midges Population Densities
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2013/3/5
Wheat ear insects in large scale winter wheat field in Salzmünde (SaxsonyAnhalt) central Germany were evaluated. The present study aimed at studying the abundance of wheat blossom midges WBM, Sitodopl...
Reducing poverty and food insecurity by applying in-field rainwater harvesting (IRWH): How rural institutions made a difference
Productivity-enhancing Thaba Nchu multidisciplinary agronomists socio-cultural
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2010/9/14
Various studies have being carried out to address the problems of rural poverty and agricultural development with mixed outcomes. While some of the proposed measures for increasing agricultural produc...
ANALYSIS OF COMPETENCIES POSSESSED BY FIELD STAFF OF PRIVATE AGRICULTURAL EXTENSION SYSTEM IN PUNJAB,PAKISTAN
Extension activities private sector Punjab Pakistan
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2009/9/29
A study was conducted in the Department of Agricultural Extension, University
of Agriculture, Faisalabad, Pakistan during 2007. A sample of 408 farmers was
selected randomly through multistage sampl...
Effect of Cypermethrin, a Pyrethroid Compound on the Nutritive Value in a Freshwater Field Crab, Spiralothelphusa hydrodroma (Herbst)
Protein carbohydrate lipid LC50 Cypermethrin Spiralothelphusa hydrodroma
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2010/11/15
The fresh water field crab, Spiralothelphusa hydrodroma is an important human food source in
parts of South India and the crab is cons tantly exposed to pes ticides, which are used extens ively to co...
Effect of Cypermethrin, A Pyrethroid Compound on the Neurosecretory Cells in a Freshwater Field Crab, Spiralothelphusa hydrodroma (Herbst)
Neurosecretory cells brain thoracic ganglia eyes talk cypermethrin Spiralothelphusa hydrodroma
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2010/11/15
The fresh water field crab, Spiralothelphusa hydrodroma is an important human food source in parts of South In d ia and the crab is cons tantly exposed to pes ticides, which are used extens ively to c...
Increased Cell-Wall Mass and Resistance to Freezing and Snow Mold during Cold Acclimation of Winter Wheat under Field Conditions
Carbohydrate accumulation Cell-wall mass Cold acclimation Freezing resistance Snow mold resistance
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2009/7/23
Accumulation of soluble carbohydrates plays an important role in enhancement of resistance to freezing and snow mold of plants during cold acclimation. Nevertheless, few studies have examined whether ...
Distribution of Arbuscular Mycorrhizal Fungi in Upland Field Soil of Japan 1.Relationship between Spore Density and the Soil Environmental Factor
Arbuscular mycorrhizal fungi Available P Spore density Upland field
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2009/7/23
To quantify the effects of arbuscular mycorrhizal fungi (AM fungi) on the growth of upland field crops cultivated in Japan, we analyzed soil samples from 124 sites in 18 Japanese prefectures for avail...
Distribution of Arbuscular Mycorrhizal Fungi in Upland Field Soil of Japan 2.Spore Density of Arbuscular Mycorrhizal Fungi and Infection Ratio in Soybean and Maize Fields
Arbuscular mycorrhizal fungi Available phosphate Infection ratio Phosphate adsorption coefficient Spore density
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2009/7/23
In this study, soil samples were collected from upland fields where maize and soybeans had been cultivated and the density of AM (arbuscular mycorrhizal) fungal spores and the percentage of soybean ro...
Yearly and Field Variations of Paddy-Upland Rotational Fields in Nitrogen Mineralization and Nitrogen Absorption by Rice in Paddy-Upland Rotational Field—A Case Study in the Nara Basin for Four Years
Nitrogen Paddy rice Paddy-upland rotation Single crop Soil Nitrogen mineralization
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2009/7/8
Soil nitrogen mineralization and nitrogen absorptions by rice in paddy-upland rotational fields (rice-wheat-soybean) were studied in the Nara basin for four years (2000-2003) in comparison with those ...
交变磁场对猴头菌生长及胞外多糖的影响（Influence of Alternating Magnetic Field on Growth and Polysaccharide outside the Cell of Lions mane hericium）
猴头菌 交变磁场 代谢产物
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2009/5/22
以猴头菌为研究对象，通过改变磁场强度和作用时间，研究交变磁场对猴头菌生长效应的影响。试验结果表明：磁场对猴头菌胞外多糖的作用相对菌丝的作用有滞后性，在磁场强度为1.06A/m, 作用时间为12h时，磁场对猴头菌菌丝的生长促进作用最强，猴头菌的菌质干质量增长率达140.1％；作用时间为24h时，猴头菌胞外多糖质量浓度增长率达100.8％；作用时间为48h时，磁场对猴头菌胞外多糖的生长促进作用最强，猴...
Static Magnetic Field Influence on Elements Composition in Date Palm (Phoenix dactylifera L.)
Static Magnetic Field Elements Composition Date Palm
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2010/11/12
Living cells possess electric charges exerted by ions or free radicals, which act as endogenous magnets. These endogenous magnets can be affected by exogenous magnetic field, which can orient unpaired...