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一株大豆腐霉菌(PSHH-1)rDNA的ITS序列鉴定
腐霉菌 ITS序列鉴定 致病力
2015/11/18
大豆腐霉菌是黑龙江省大豆根腐病菌群的重要组成部分，为了明确大豆腐霉菌的种类，从黑龙江省黑河市大豆根系土壤分离获得1株腐霉菌PSHH1，应用Rdna-ITS序列分析法对其进行菌种鉴定。Blast和系统进化树结果表明：PSHH1与GenBank上登录号为AB259316.1和AB512973.1等的Pythium sylvaticum亲缘关系最近，rDNA-ITS序列同源性大于99%，因此认定PSHH...
Soil organic carbon dynamics and its influence on the soil erodibility factor
agrotechnical erosion control measures soil erodibility factor soil erosion soil organic carbon
2015/3/5
The effect of erosion and erosion control measures on changes in the amount of organic matter in soil was studied. We investigated the influence of organic matter inputs into the soil on surface runof...
Field study of chlorotoluron transport and its prediction by the BPS mathematical model
chlorotoluron contaminant transport field study half-life degradation herbicides mathematical model BPS
2015/3/2
The chlorotoluron transport in the soil profiles was studied under field conditions on three different soil types of the Czech Republic. The herbicide was applied on 21. 4. 2005 on a four-square meter...
Approximation of Subsurface Drainage Discharge by De Zeeuw-Hellinga Theory and its Verification in Heavy Soils of Fluvial Landscape of the Cerhovice Brook
subsurface pipe drainage system subsurface drainage discharge
2015/3/1
The subsurface drainage discharge is one of the most important indicators of the impact of the drainage systems on the water management. The procedure adopted in this study is based on the application...
Soil Organic Matter and its Stability in Aerobic and Anaerobic Conditions
soils organic matter stability aerobic anaerobic conditions
2015/1/28
In eight samples of organic and organomineral surface horizons we studied the stability of soil organic matter in aerobic and anaerobic conditions expressed by the rate constant of its biochemical oxi...
The effect of crop sequences on soil microbial, chemical and physical indicators and its relationship with soybean sudden death syndrome (complex of Fusarium species)
physical variables soybean sudden death syndrome
2014/10/23
The effect of crop sequences on soil quality indicators and its relationship with sudden death syndrome (SDS, a complex of Fusarium species) was evaluated by physical, chemical, biochemical and molecu...
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
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...
International Workshop on “Soil Structure and its Functions on Ecosystem”-1st an
International Workshop Soil Structure Functions on Ecosystem
2012/12/27
Soil structure is a fundamental property of soil fertility, its ability to transport water, nutrients and gas, and to provide habitat for microorganisms and fauna. Aggregated soil structure can improv...
Effects of level soil bunds and stone bunds on soil properties and its implications for crop production: the case of Bokole watershed, Dawuro zone, Southern Ethiopia
Crop Yield Level Soil Bund Nonterraced Soil Fertility Stone Bund Water Erosion Watershed
2013/3/4
Level soil bunds (LSB) and stone bunds (SB) have been widely implemented in the Bokole watershed since 2000 through support of the World Food Program (WFP). However, the performance of them against th...
Development of the Coupled Atmosphere and Land Data Assimilation System (CALDAS) and Its Application Over the Tibetan Plateau
Cloud data assimilation land–atmosphere interactions land data assimilation (LDAS) microwave remote sensing numerical weather prediction (NWP)
2013/9/2
Land surface heterogeneities are important for accurate estimation of land–atmosphere interactions and their feedbacks on water and energy budgets. To physically introduce existing land surface hetero...
Soil reinforcement by a root system and its effects on sediment yield in response to concentrated flow in the loess plateau
Root Soil Properties Soil Erosion Sediment Yield Loess Plateau
2013/3/4
The importance of roots in soil conservation has long been underestimated due to a lack of sys-tematic studies conducted to evaluate root dis-tribution patterns and their effects on soil ero-sion. Cur...
Depletion of magnesium in Egyptian soils, its content in crops and estimated needs
Egypt magnesium soils old land new land
2011/1/11
Soil and leaf analyses were used to survey magnesium status of different soils and crops in different governorates of Egypt during the period from 1986 - 2006. Results show that large areas in differe...
不同土层土壤水分特征曲线的空间变异及其影响因素（Spatial Variability of Soil Water Retention Curve in Different Soil Layers and Its Affecting Factors）
土壤水分特征曲线 空间变异 多重分形
2010/1/28
利用多重分形和联合多重分形方法，对陕西杨凌地区0～20cm和20～40cm土层van Genuchten模型参数的空间变异性及其影响因素进行了研究。结果表明：0～20cm和20～40cm土层参数α都具有明显的多重分形特征，空间变异性较强，且分别是由低值和高值分布引起的；参数n和θs的多重分形特征不明显，空间变异性较弱。0～20cm和20～40cm土层van Genuchten模型参数与土壤物理特性...
玉米根围土壤中腐霉菌的分离鉴定及核糖体DNA－ITS犐犜犛序列分析
玉米 根围土壤 腐霉 鉴定 核糖体ＤＮＡ－ＩＴＳ
2009/11/17
从兰州地区的红古、七里河等地采集玉米根围土壤标样，诱饵法与组织分离法相结合分离纯化到２３株腐霉菌株，通过形态特征、培养特性、生长速度和对温度适应范围的研究，结合ｒＤＮＡ－ＩＴＳ序列分析，将分离到的腐霉菌株鉴定为硬腐霉、终极腐霉和一个腐霉待定种。这是首次报道在我国分离到硬腐霉，为我国新记录种；终极腐霉也系首次在甘肃从玉米根围土壤中分离到。统计表明，３种腐霉菌种在兰州地区玉米根围土壤中的分离频率不同，...
Growth and Yield Characteristics of Manaw Thu Kha, a Myanmar Rice Cultivar, Influenced by the Kind of Chemical Fertilizer and its Application Method
Heading characteristics Leaf area index Leaf color value Light extinction coefficient Manaw Thu Kha
2009/7/8
The growth and yield of Manaw Thu Kha (MTK), a high yielding rice cultivar in Myanmar, were studied comparison with those of Japanese cultivars, Koshihikari (KH) and Nipponbare (NB). Four fertilizatio...